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All questions of Introduction to Physiographic Regions for BPSC (Bihar) Exam
The direction of wind around a low pressure in northern hemisphere is:
- a)Clockwise
- b)Perpendicular to isobars
- c)Anti-clock wise
- d)Parallel to isobars
Correct answer is option 'C'. Can you explain this answer?
The direction of wind around a low pressure in northern hemisphere is:
a)
Clockwise
b)
Perpendicular to isobars
c)
Anti-clock wise
d)
Parallel to isobars
|
Shreya Mehta answered |
Low pressure systems are characterized by rising air that cools and condenses to form clouds and precipitation. As air rises in a low pressure system, it creates a region of lower pressure at the surface. Air flows from areas of higher pressure to areas of lower pressure, so in the Northern Hemisphere, air flows towards a low pressure system in a counterclockwise direction.
Explanation:
Coriolis Effect:
The Coriolis Effect is an important factor in the movement of air around low pressure systems. The Coriolis Effect is a result of the Earth's rotation on its axis, which causes objects in the Northern Hemisphere to be deflected to the right of their intended path. This means that air flowing towards a low pressure system in the Northern Hemisphere will be deflected to the right, causing it to flow in a counterclockwise direction around the low pressure system.
Rising Air:
As air rises in a low pressure system, it creates a region of lower pressure at the surface. Air flows from areas of higher pressure to areas of lower pressure, so in the Northern Hemisphere, air flows towards a low pressure system. This air is deflected to the right by the Coriolis Effect, causing it to flow in a counterclockwise direction around the low pressure system.
Conclusion:
In conclusion, the direction of wind around a low pressure system in the Northern Hemisphere is counterclockwise. This is due to the Coriolis Effect, which causes air to be deflected to the right in the Northern Hemisphere. As air flows towards a low pressure system, it is deflected to the right, causing it to flow in a counterclockwise direction around the low pressure system.
Explanation:
Coriolis Effect:
The Coriolis Effect is an important factor in the movement of air around low pressure systems. The Coriolis Effect is a result of the Earth's rotation on its axis, which causes objects in the Northern Hemisphere to be deflected to the right of their intended path. This means that air flowing towards a low pressure system in the Northern Hemisphere will be deflected to the right, causing it to flow in a counterclockwise direction around the low pressure system.
Rising Air:
As air rises in a low pressure system, it creates a region of lower pressure at the surface. Air flows from areas of higher pressure to areas of lower pressure, so in the Northern Hemisphere, air flows towards a low pressure system. This air is deflected to the right by the Coriolis Effect, causing it to flow in a counterclockwise direction around the low pressure system.
Conclusion:
In conclusion, the direction of wind around a low pressure system in the Northern Hemisphere is counterclockwise. This is due to the Coriolis Effect, which causes air to be deflected to the right in the Northern Hemisphere. As air flows towards a low pressure system, it is deflected to the right, causing it to flow in a counterclockwise direction around the low pressure system.
Many places in India are famous for particular minerals. Which of these pairs are correctly matched?1. Zawar : Uranium2. Khetri : Copper3. Balaghat : Manganese4. Jaduguda : ZincSelect the correct answer using the codes given below.- a)1 and 2 only
- b)1 and 3 only
- c)1 and 4 only
- d)2 and 3 only
Correct answer is option 'D'. Can you explain this answer?
Many places in India are famous for particular minerals. Which of these pairs are correctly matched?
1. Zawar : Uranium
2. Khetri : Copper
3. Balaghat : Manganese
4. Jaduguda : Zinc
Select the correct answer using the codes given below.
a)
1 and 2 only
b)
1 and 3 only
c)
1 and 4 only
d)
2 and 3 only
|
Ankita Jawale answered |
Khatri nagar which is located 10 km far from khatri known as 'Tamba project (copper project ) khatri nagar was built by Hindustan copper Limited which is a public sector under the "Government of India" and user his jurisdiction. India contributes 2 % in worlds copper production.
Balaghat distric of M.P is famous for production of manganese . About 80% of the manganese production in India comes from Balaghat. zawar is famous for zinc mines created by Hindustan Zinc Limited.
Balaghat distric of M.P is famous for production of manganese . About 80% of the manganese production in India comes from Balaghat. zawar is famous for zinc mines created by Hindustan Zinc Limited.
The direction of wind around a low pressure in northern hemisphere is:- a)clockwise
- b)perpendicular to isobars
- c)anti-clock wise
- d)parallel to isobars
Correct answer is option 'C'. Can you explain this answer?
The direction of wind around a low pressure in northern hemisphere is:
a)
clockwise
b)
perpendicular to isobars
c)
anti-clock wise
d)
parallel to isobars
|
Alok Verma answered |
If a low-pressure area forms in the atmosphere, air flows towards this region, but will be deflected perpendicular to its velocity by the Coriolis force. Instead of flowing straight towards the low pressure area, the air ends up circulating around it.
This pattern of air flow is called a cyclone. In the Northern Hemisphere the direction of rotation around a low pressure area is counter-clockwise or anti-clockwise.
Days and nights are equal throughout the globe when the sun is above: - a)Poles
- b)Equator
- c)Tropic of Cancer
- d)Tropic of Capricorn
Correct answer is option 'B'. Can you explain this answer?
Days and nights are equal throughout the globe when the sun is above:
a)
Poles
b)
Equator
c)
Tropic of Cancer
d)
Tropic of Capricorn
|
Saanvi Reddy answered |
Explanation: An equinox is an astronomical event in which the plane of Earth's equator passes through the center of the Sun, which occurs twice each year, around 20 March and 23 September. On an equinox, day and night are of approximately equal duration all over the planet
A piece of land surrounded by water from all sides in an ocean, sea, lake or river, is called- a)Estuary
- b)An island
- c)Peninsula
- d)None of these
Correct answer is option 'B'. Can you explain this answer?
A piece of land surrounded by water from all sides in an ocean, sea, lake or river, is called
a)
Estuary
b)
An island
c)
Peninsula
d)
None of these
|
|
Alok Verma answered |
A piece of land that is completely surrounded by water on all sides is known as an island.
A peninsula is a piece of land that is bordered by water on three sides but connected to the mainland. Peninsulas are formed through a gradual rise in water level, surrounding land at low elevation.
A peninsula is a piece of land that is bordered by water on three sides but connected to the mainland. Peninsulas are formed through a gradual rise in water level, surrounding land at low elevation.
An estuary is a partially enclosed coastal body of brackish water with one or more rivers or streams flowing into it, and with a free connection to the open sea.
A meridian is- a)The circle of the earth passing through the poles and a point on the Earth's surface
- b)The distance between the Earth and the Moon
- c)The axis around circle of the earth away from the equator towards the poles
- d)The latitudinal circle of the earth away from the equator towards the poles
Correct answer is option 'A'. Can you explain this answer?
A meridian is
a)
The circle of the earth passing through the poles and a point on the Earth's surface
b)
The distance between the Earth and the Moon
c)
The axis around circle of the earth away from the equator towards the poles
d)
The latitudinal circle of the earth away from the equator towards the poles
|
Nikita Singh answered |
A (geographic) meridian (or line of longitude) is the half of an imaginary great circle on the Earth's surface, a coordinate line terminated by the North Pole and the South Pole, connecting points of equal longitude, as measured in angular degrees east or west of the Prime Meridian.
Excluding the moon, the celestial object that generally appears bright in the sky is- a)Jupiter
- b)Polestar
- c)Sirius
- d)Venus
Correct answer is option 'D'. Can you explain this answer?
Excluding the moon, the celestial object that generally appears bright in the sky is
a)
Jupiter
b)
Polestar
c)
Sirius
d)
Venus
|
|
Anjali Kapoor answered |
Venus is the third-brightest object in the sky, after the sun and moon. That's partly because sunlight is easily reflected by acidic clouds in the atmosphere of Venus.
Some areas in India receive very high annual rainfall of more than 200 cm. These include:1. Major parts of Assam.2. West coast from Thiruvananthapuram to Mumbai.3. Ladakh region of Jammu Kashmir.Select the correct answer using the codes given below.- a)2 and 3 only
- b)1 and 3 only
- c)1 and 2 only
- d)1, 2 and 3
Correct answer is option 'C'. Can you explain this answer?
Some areas in India receive very high annual rainfall of more than 200 cm. These include:
1. Major parts of Assam.
2. West coast from Thiruvananthapuram to Mumbai.
3. Ladakh region of Jammu Kashmir.
Select the correct answer using the codes given below.
a)
2 and 3 only
b)
1 and 3 only
c)
1 and 2 only
d)
1, 2 and 3
|
|
Saranya Gupta answered |
Areas in India with high annual rainfall
1. Major parts of Assam - Assam is a state located in the northeast region of India. The state is known for its high rainfall and humid climate. The Brahmaputra valley in Assam receives heavy rainfall, which is essential for the growth of tea, the state's primary crop.
2. West coast from Thiruvananthapuram to Mumbai - The west coast of India receives rainfall from the southwest monsoon. The region from Thiruvananthapuram in Kerala to Mumbai in Maharashtra receives heavy rainfall, with some areas recording more than 200 cm of rainfall annually. This region is known for its lush green forests and beautiful waterfalls.
3. Ladakh region of Jammu Kashmir - Ladakh is a high-altitude region located in the northernmost part of India. The region is known for its cold desert climate, but some areas in Ladakh receive rainfall due to the Indian monsoon. The Zanskar valley in Ladakh receives rainfall, which is essential for agriculture and livestock rearing.
Therefore, the correct answer is option 'C' - 1 and 2 only, as only Assam and the west coast from Thiruvananthapuram to Mumbai receive more than 200 cm of rainfall annually.
1. Major parts of Assam - Assam is a state located in the northeast region of India. The state is known for its high rainfall and humid climate. The Brahmaputra valley in Assam receives heavy rainfall, which is essential for the growth of tea, the state's primary crop.
2. West coast from Thiruvananthapuram to Mumbai - The west coast of India receives rainfall from the southwest monsoon. The region from Thiruvananthapuram in Kerala to Mumbai in Maharashtra receives heavy rainfall, with some areas recording more than 200 cm of rainfall annually. This region is known for its lush green forests and beautiful waterfalls.
3. Ladakh region of Jammu Kashmir - Ladakh is a high-altitude region located in the northernmost part of India. The region is known for its cold desert climate, but some areas in Ladakh receive rainfall due to the Indian monsoon. The Zanskar valley in Ladakh receives rainfall, which is essential for agriculture and livestock rearing.
Therefore, the correct answer is option 'C' - 1 and 2 only, as only Assam and the west coast from Thiruvananthapuram to Mumbai receive more than 200 cm of rainfall annually.
Salinity is expressed as the amount of salt in grams dissolved in sea water per- a)10 gm
- b)1,000 gm
- c)100 gm
- d)10,000 gm
Correct answer is option 'B'. Can you explain this answer?
Salinity is expressed as the amount of salt in grams dissolved in sea water per
a)
10 gm
b)
1,000 gm
c)
100 gm
d)
10,000 gm
|
Vaibhav Chauhan answered |
Explanation: Salinity is the term used to define the total content of dissolved salts in sea water (Table 13.4). It is calculated as the amount of salt (in gm) dissolved in 1,000 gm (1 kg) of seawater. It is usually expressed as parts per thousand (o/oo) or ppt.
With reference to International Date Line (IDL), consider the following statements:
1. A traveller crossing the International Date Line from east to west gains a day and while crossing the dateline from west to east he loses a day.
2. The International Date Line I the mid-Pacific curves from the normal 180-degree meridian at the Bering Strait, Fiji, Tonga and other islands to prevent confusion of the day and date in some of the groups that are cut through by the meridian.
Which of the statements given above is/are correct?
- a) 1 only
- b) Neither 1 nor 2
- c) 2 only
- d)Both 1 and 2
Correct answer is option 'D'. Can you explain this answer?
With reference to International Date Line (IDL), consider the following statements:
1. A traveller crossing the International Date Line from east to west gains a day and while crossing the dateline from west to east he loses a day.
2. The International Date Line I the mid-Pacific curves from the normal 180-degree meridian at the Bering Strait, Fiji, Tonga and other islands to prevent confusion of the day and date in some of the groups that are cut through by the meridian.
Which of the statements given above is/are correct?
a)
1 only
b)
Neither 1 nor 2
c)
2 only
d)
Both 1 and 2
|
|
Sonal Basak answered |
- Crossing the International Date Line from east to west, you gain a day. From west to east, you lose a day. This is due to the way time zones are structured globally.
- The International Date Line isn't a straight line. It deviates around the Bering Strait, Fiji, Tonga, and other islands to avoid splitting countries or islands into different days, minimizing confusion.
- Both statements are accurate, confirming why the correct answer is D: Both 1 and 2.
- The International Date Line isn't a straight line. It deviates around the Bering Strait, Fiji, Tonga, and other islands to avoid splitting countries or islands into different days, minimizing confusion.
- Both statements are accurate, confirming why the correct answer is D: Both 1 and 2.
Correct answer is D.
Consider the following statements about forests soils :
1. They are rich in humus
2. They are deficient in phosphorous and potash
Which of the statements given above is/are correct ?
- a)1 only
- b)2 only
- c)Neither 1 nor 2
- d)Both 1 and 2
Correct answer is option 'D'. Can you explain this answer?
Consider the following statements about forests soils :
1. They are rich in humus
2. They are deficient in phosphorous and potash
Which of the statements given above is/are correct ?
a)
1 only
b)
2 only
c)
Neither 1 nor 2
d)
Both 1 and 2
|
|
Akash Majumdar answered |
Explanation:
1. Rich in humus:
- Forest soils are typically rich in organic matter, including humus, which is formed from the decomposition of plant and animal materials.
- Humus helps to improve soil structure, fertility, and moisture retention, making forest soils ideal for supporting diverse plant and animal life.
2. Deficient in phosphorous and potash:
- While forest soils are generally nutrient-rich due to the presence of organic matter, they can be deficient in certain essential nutrients like phosphorous and potash.
- Phosphorous and potash are important for plant growth and development, and their deficiency can limit the productivity of forest ecosystems.
Conclusion:
Both statements are correct. Forest soils are rich in humus but may be deficient in phosphorous and potash, highlighting the importance of nutrient management in forest ecosystems.
1. Rich in humus:
- Forest soils are typically rich in organic matter, including humus, which is formed from the decomposition of plant and animal materials.
- Humus helps to improve soil structure, fertility, and moisture retention, making forest soils ideal for supporting diverse plant and animal life.
2. Deficient in phosphorous and potash:
- While forest soils are generally nutrient-rich due to the presence of organic matter, they can be deficient in certain essential nutrients like phosphorous and potash.
- Phosphorous and potash are important for plant growth and development, and their deficiency can limit the productivity of forest ecosystems.
Conclusion:
Both statements are correct. Forest soils are rich in humus but may be deficient in phosphorous and potash, highlighting the importance of nutrient management in forest ecosystems.
Atoll refers to- a)A narrow strip of land separating two seas
- b)A hill top
- c)A strait joining two-seas
- d)A horse-shoe or ring-shaped coral reef
Correct answer is option 'D'. Can you explain this answer?
Atoll refers to
a)
A narrow strip of land separating two seas
b)
A hill top
c)
A strait joining two-seas
d)
A horse-shoe or ring-shaped coral reef
|
|
Rishabh Sen answered |
Explanation: An atoll is a ring-shaped coral reef, island, or series of islets. An atoll surrounds a body of water called a lagoon. Sometimes, atolls and lagoons protect a central island. Channels between islets connect a lagoon to the Open Ocean or sea.
Which of the following is/are not characteristics of El nino?- a)Increased surface pressure over the Indian Ocean, Australia and Indonesia
- b)Rise in warm air near Peru
- c)Fall in air pressure over eastern and central Pacific ocean and Tahiti.
- d)Below-average sea surface temperatures across the east-central Equatorial Pacific
Correct answer is option 'D'. Can you explain this answer?
Which of the following is/are not characteristics of El nino?
a)
Increased surface pressure over the Indian Ocean, Australia and Indonesia
b)
Rise in warm air near Peru
c)
Fall in air pressure over eastern and central Pacific ocean and Tahiti.
d)
Below-average sea surface temperatures across the east-central Equatorial Pacific
|
|
Puja Sengupta answered |
Explanation: Below-average sea surface temperatures across the east-central Equatorial Pacific is a characteristic of La Nina which is anti El-Nino.
Temperature increases in ________- a)Stratosphere
- b)Thermosphere
- c)Both (a) & (b)
- d)None of these
Correct answer is option 'C'. Can you explain this answer?
Temperature increases in ________
a)
Stratosphere
b)
Thermosphere
c)
Both (a) & (b)
d)
None of these
|
|
Sandip Jadhav answered |
In stratosphere the ozone layer is present which absorbs UV radiations coming from sun, results in increase of temperature up to 4 degree Celsius.
In case of thermosphere (ionosphere) gas molecules are present which absorbs X Ray's and UV rays causing temp. rise upto 1480 degree Celsius.
In case of thermosphere (ionosphere) gas molecules are present which absorbs X Ray's and UV rays causing temp. rise upto 1480 degree Celsius.
The International Date-line passes through the:- a)Bering Strait
- b)Florida Strait
- c)Gibraltar Strait
- d)Malacca Strait
Correct answer is option 'A'. Can you explain this answer?
The International Date-line passes through the:
a)
Bering Strait
b)
Florida Strait
c)
Gibraltar Strait
d)
Malacca Strait
|
|
S R Khan answered |
The International Date Line passes through the Bering Strait between the Diomede Island.
The sun is directly overhead at noon on 21st June at:- a) The equator
- b) 23.5° S
- c) 23.5° N
- d) 66.5° N
Correct answer is option 'C'. Can you explain this answer?
The sun is directly overhead at noon on 21st June at:
a)
The equator
b)
23.5° S
c)
23.5° N
d)
66.5° N
|
Rohit Jain answered |
The correct option is Option C.
At that time, sun's rays are overhead at the tropic of cancer (23.5°N). The Tropic of Cancer passes through the middle of India. It remains till the end of May in India. Before summer solstice i.e., 21st June, monsoon starts in India which brings a cooling effect to the climate of India.
At that time, sun's rays are overhead at the tropic of cancer (23.5°N). The Tropic of Cancer passes through the middle of India. It remains till the end of May in India. Before summer solstice i.e., 21st June, monsoon starts in India which brings a cooling effect to the climate of India.
Which among the following is known as ” Doctor Wind”?- a)Loo
- b)Chinook
- c)Harmattan
- d)None of the above
Correct answer is option 'C'. Can you explain this answer?
Which among the following is known as ” Doctor Wind”?
a)
Loo
b)
Chinook
c)
Harmattan
d)
None of the above
|
|
Aravind Basu answered |
Answer: c
Explanation: The Harmattan is a dry and dusty northeasterly trade wind which blows from the Sahara Desert over the West African subcontinent into the Gulf of Guinea between the end of November and the middle of March (winter)
The earth reaches its perihelion in:- a)October
- b)September
- c)July
- d)January
Correct answer is option 'D'. Can you explain this answer?
The earth reaches its perihelion in:
a)
October
b)
September
c)
July
d)
January
|
|
Sanchita Bose answered |
Explanation: When the earth is closest to the sun (perihelion), around 3rd January each year
Consider the following towns:
1. Karachi
2. Dhaka
3. Mandalay
4. Jodhpur
Which of the following is the correct order of the towns from north to south ?
- a)4 1 2 3
- b)4 3 2 1
- c)1 2 3 4
- d)4 2 3 1
Correct answer is option 'A'. Can you explain this answer?
Consider the following towns:
1. Karachi
2. Dhaka
3. Mandalay
4. Jodhpur
Which of the following is the correct order of the towns from north to south ?
a)
4 1 2 3
b)
4 3 2 1
c)
1 2 3 4
d)
4 2 3 1
|
|
Saanvi Mehta answered |
To accurately determine the order from north to south, we should verify the latitudes once more:
- Mandalay, Myanmar: Latitude approximately 21.98° N
- Dhaka, Bangladesh: Latitude approximately 23.81° N
- Karachi, Pakistan: Latitude approximately 24.86° N
- Jodhpur, India: Latitude approximately 26.29° N
Correct order from north to south:
- Jodhpur (26.29° N) - The northernmost town.
- Karachi (24.86° N) - Further south than Jodhpur but north of Dhaka.
- Dhaka (23.81° N) - Further south than Karachi.
- Mandalay (21.98° N) - The southernmost town.
So, the correct order from north to south is:
- Jodhpur
- Karachi
- Dhaka
- Mandalay
The largest of all plates is _____ plate.- a)Eurasian
- b)North American
- c)Pacific
- d)None of these
Correct answer is option 'C'. Can you explain this answer?
The largest of all plates is _____ plate.
a)
Eurasian
b)
North American
c)
Pacific
d)
None of these
|
|
Vaibhav Chauhan answered |
Explanation: The Pacific Plate is an oceanic tectonic plate that lies beneath the Pacific Ocean. At 103 million square kilometers, it is the largest tectonic plate.
What does 'Roaring forties' refer to?
- a)The tract of stormy westerly winds between latitudes 20-30o
- b)Whirl winds caused in Atlantic Ocean
- c)The region between latitudes 40º and 50ºS where the prevailing westerly winds blow over the open oceans with great regularity and strength
- d)None of these
Correct answer is option 'C'. Can you explain this answer?
What does 'Roaring forties' refer to?
a)
The tract of stormy westerly winds between latitudes 20-30o
b)
Whirl winds caused in Atlantic Ocean
c)
The region between latitudes 40º and 50ºS where the prevailing westerly winds blow over the open oceans with great regularity and strength
d)
None of these
|
|
Sagar Nair answered |
Explanation: The Roaring Forties are strong westerly winds found in the Southern Hemisphere, generally between the latitudes of 40 and 50 degrees.
Which one of the following process is responsible for transforming liquid into vapour?- a) Condensation
- b) Transpiration
- c) Evaporation
- d) Precipitation
Correct answer is option 'A'. Can you explain this answer?
Which one of the following process is responsible for transforming liquid into vapour?
a)
Condensation
b)
Transpiration
c)
Evaporation
d)
Precipitation
|
|
Rohit Jain answered |
Evaporation happens when a liquid substance becomes a gas. When water is heated, it evaporates. The molecules move and vibrate so quickly that they escape into the atmosphere as molecules of water vapor.
The rivers in India that flows through a rift valley are1. Luni2. Damodar3. Tapi4. BetwaSelect the correct answer using the codes given below.- a)1, 2 and 3 only
- b)1, 3 and 4 only
- c)2 and 3 only
- d)1, 2, and 4 only
Correct answer is option 'B'. Can you explain this answer?
The rivers in India that flows through a rift valley are
1. Luni
2. Damodar
3. Tapi
4. Betwa
Select the correct answer using the codes given below.
a)
1, 2 and 3 only
b)
1, 3 and 4 only
c)
2 and 3 only
d)
1, 2, and 4 only
|
|
Pritam Shah answered |
Answer: b)
Explanation: In weathering, there is no movement and it is an in-situ process. In soil creep and landslide there is mass movement of soil and debris respectively, so they come under the phenomena of mass movement
Erosion in coastal areas forms different types of landform. Which of the following is/are erosional landform of coastal areas?1. wave-cut platforms2. Beaches3. Capes and baysSelect the correct answer using the codes given below.- a)1 and 2 only
- b)1 and 3 only
- c)2 and 3 only
- d)1, 2 and 3
Correct answer is option 'C'. Can you explain this answer?
Erosion in coastal areas forms different types of landform. Which of the following is/are erosional landform of coastal areas?
1. wave-cut platforms
2. Beaches
3. Capes and bays
Select the correct answer using the codes given below.
a)
1 and 2 only
b)
1 and 3 only
c)
2 and 3 only
d)
1, 2 and 3
|
|
Sandeep Mukherjee answered |
Answer: c)
Explanation: Apart from Narmada, Damodar and Tapi also flow through a rift valley.
Peninsular rivers rarely form meanders. Which of the following could be a reason for it ?1. Hard rock surface of peninsular regions.2. Non-Alluvial character of plateau3. High erosional capacity of riversSelect the correct answer using the codes given below.- a)1 and 2 only
- b)1 and 3 only
- c)1 only
- d)2 only
Correct answer is option 'A'. Can you explain this answer?
Peninsular rivers rarely form meanders. Which of the following could be a reason for it ?
1. Hard rock surface of peninsular regions.
2. Non-Alluvial character of plateau
3. High erosional capacity of rivers
Select the correct answer using the codes given below.
a)
1 and 2 only
b)
1 and 3 only
c)
1 only
d)
2 only
|
|
Sanchita Bose answered |
Answer: a)
Explanation: If you answered (a) and (b), then its time to have a look at the map of India. Western ghats run through six states – Gujarat, Maharashtra, Goa, Karnataka, Kerala and Tamil Nadu.
Which of the following INCORRECT about cirrus clouds?- a) They formed at high altitudes
- b) They are thin and detatched clouds
- c) They are white and grey in colour
- d) None of the above
Correct answer is option 'C'. Can you explain this answer?
Which of the following INCORRECT about cirrus clouds?
a)
They formed at high altitudes
b)
They are thin and detatched clouds
c)
They are white and grey in colour
d)
None of the above
|
|
Poulomi Menon answered |
Answer: c)
Explanation: Cirrus clouds are formed at high altitudes (8,000 - 12,000m). They are thin and detatched clouds having a feathery appearance. They are always white in colour.
Which of the following affects atmospheric pressure?- a)Altitude
- b)Temperature
- c)Earth rotation
- d)All the above
Correct answer is option 'D'. Can you explain this answer?
Which of the following affects atmospheric pressure?
a)
Altitude
b)
Temperature
c)
Earth rotation
d)
All the above
|
|
Raksha Das answered |
Atmospheric Pressure
Factors affecting Atmospheric Pressure
Conclusion
Atmospheric pressure is the force exerted by the weight of the atmosphere on the surface of the earth or any object in it. It is measured in units of pressure such as millibars or inches of mercury.
Factors affecting Atmospheric Pressure
- Altitude: Atmospheric pressure decreases as altitude increases. As we go higher up in the atmosphere, the air becomes less dense, and the pressure exerted by it on the surface decreases. At sea level, atmospheric pressure is around 1013 millibars, while at the top of Mount Everest, it is around 300 millibars.
- Temperature: Temperature also affects atmospheric pressure. As the air gets warmer, it expands and becomes less dense, leading to a decrease in pressure. Similarly, as the air gets colder, it contracts and becomes denser, leading to an increase in pressure.
- Earth rotation: The rotation of the earth also affects atmospheric pressure. Due to the earth's rotation, the air near the equator is heated more than the air near the poles. This causes the air to rise near the equator and sink near the poles, leading to differences in pressure.
Conclusion
Thus, all the above factors - altitude, temperature, and earth rotation - affect atmospheric pressure. Understanding these factors is crucial in predicting weather patterns and monitoring changes in the atmosphere.
The Inter Tropical Convergence Zone normally occurs:
- a) Near the Equator
- b) Near the Tropic of Cancer
- c) Near the Tropic of Capricorn
- d) Near the Arctic Circle
Correct answer is option 'A'. Can you explain this answer?
The Inter Tropical Convergence Zone normally occurs:
a)
Near the Equator
b)
Near the Tropic of Cancer
c)
Near the Tropic of Capricorn
d)
Near the Arctic Circle
|
|
Vandana Deshpande answered |
The Inter Tropical Convergence Zone (ITCZ) is a belt of low pressure that circles the Earth, generally near the Equator, where the trade winds of the Northern and Southern Hemispheres come together. It is also known as the Equatorial Convergence Zone (ECZ).
Location of ITCZ
The ITCZ normally occurs near the Equator, where the sun is directly overhead and the surface heating is maximum. The location of the ITCZ varies with the season and the position of the sun. During the summer months, the ITCZ shifts northward towards the Tropic of Cancer, and during the winter months, it shifts southward towards the Tropic of Capricorn.
Factors affecting ITCZ
The position of the ITCZ is influenced by various factors, including:
1. Solar heating: The ITCZ is formed due to the intense solar heating near the Equator, which causes the warm, moist air to rise and form clouds.
2. Earth's rotation: The rotation of the Earth causes the trade winds to curve, which leads to the convergence of air masses at the Equator.
3. Ocean currents: The ocean currents play a significant role in the formation and movement of the ITCZ. The warm ocean currents near the Equator provide the necessary moisture to fuel the convection process.
4. Landmasses: The presence of landmasses can affect the position and intensity of the ITCZ. For example, the ITCZ shifts northward during the summer months in the Northern Hemisphere due to the heating of the Asian landmass.
Importance of ITCZ
The ITCZ plays a crucial role in the global climate system, as it is responsible for the formation of the tropical rainforests and the distribution of rainfall in the tropics. The ITCZ also affects the global atmospheric circulation, as the rising air masses in the ITCZ create low pressure, which drives the trade winds and the Hadley cell circulation.
Location of ITCZ
The ITCZ normally occurs near the Equator, where the sun is directly overhead and the surface heating is maximum. The location of the ITCZ varies with the season and the position of the sun. During the summer months, the ITCZ shifts northward towards the Tropic of Cancer, and during the winter months, it shifts southward towards the Tropic of Capricorn.
Factors affecting ITCZ
The position of the ITCZ is influenced by various factors, including:
1. Solar heating: The ITCZ is formed due to the intense solar heating near the Equator, which causes the warm, moist air to rise and form clouds.
2. Earth's rotation: The rotation of the Earth causes the trade winds to curve, which leads to the convergence of air masses at the Equator.
3. Ocean currents: The ocean currents play a significant role in the formation and movement of the ITCZ. The warm ocean currents near the Equator provide the necessary moisture to fuel the convection process.
4. Landmasses: The presence of landmasses can affect the position and intensity of the ITCZ. For example, the ITCZ shifts northward during the summer months in the Northern Hemisphere due to the heating of the Asian landmass.
Importance of ITCZ
The ITCZ plays a crucial role in the global climate system, as it is responsible for the formation of the tropical rainforests and the distribution of rainfall in the tropics. The ITCZ also affects the global atmospheric circulation, as the rising air masses in the ITCZ create low pressure, which drives the trade winds and the Hadley cell circulation.
Tropical cyclones do not form over equator. This is because1. Equator is a zone of wind convergence.2. The temperature over equator is too high.3. There are no fronts over equator.Select the correct answer using the codes given below.- a) 1 and 2 only
- b) 1 and 3 only
- c) 2 and 3 only
- d) None of the above
Correct answer is option 'D'. Can you explain this answer?
Tropical cyclones do not form over equator. This is because
1. Equator is a zone of wind convergence.
2. The temperature over equator is too high.
3. There are no fronts over equator.
Select the correct answer using the codes given below.
a)
1 and 2 only
b)
1 and 3 only
c)
2 and 3 only
d)
None of the above
|
|
Sonal Basak answered |
Answer: d)
Explanation: Tropical cyclone does not form over the equator because the coriolis force is zero at the equator. Even though equator is a zone of wind convergence, it has nothing to do with tropical cyclone as such. Temperature is highest north and south of equator and not exactly at equator. Fronts are required for formation of temperate cyclone and not tropical ones. So even though statement 3 is correct it is not a reason.
With reference to insolation, consider the following statements:1. Equator receives less insolation than tropics.2. At the same latitude the insolation is more over the oceans than over the continents.Which of the statements given above is/are correct?- a)1 only
- b)2 only
- c)Both 1 and 2
- d)Neither 1 nor 2
Correct answer is option 'A'. Can you explain this answer?
With reference to insolation, consider the following statements:
1. Equator receives less insolation than tropics.
2. At the same latitude the insolation is more over the oceans than over the continents.
Which of the statements given above is/are correct?
a)
1 only
b)
2 only
c)
Both 1 and 2
d)
Neither 1 nor 2
|
|
Advait Chawla answered |
Answer: a)
Explanation: Peninsular rivers have lower erosional capacity, but because of hard rock surface in the region and non-alluvial character of plateau, they travel almost straight and thus do not form meanders
The atmosphere is mainly heated by the:- a) Short wave solar radiation
- b) Reflected solar radiation
- c) Long wave terrestrial radiation
- d) Scattered solar radiation
Correct answer is option 'C'. Can you explain this answer?
The atmosphere is mainly heated by the:
a)
Short wave solar radiation
b)
Reflected solar radiation
c)
Long wave terrestrial radiation
d)
Scattered solar radiation
|
Kiran Mehta answered |
option C is the correct answer. The atmosphere is mainly heated by long wave terrestrial radiation, also known as infra-red radiation. This type of radiation is emitted by the Earth's surface and lower atmosphere, and it is responsible for warming the air and contributing to the overall temperature of the planet. Short wave solar radiation, reflected solar radiation, and scattered solar radiation all contribute to heating the atmosphere as well, but long wave terrestrial radiation is the primary source of heat for the atmosphere. This is because long wave radiation has a longer wavelength and a lower frequency than short wave radiation, which means it is able to penetrate the atmosphere more easily and reach the Earth's surface more effectively
Which one of the following is the highest cloud in the sky?- a)Cirrus
- b)Stratus
- c)Nimbus
- d)Cumulus
Correct answer is option 'A'. Can you explain this answer?
Which one of the following is the highest cloud in the sky?
a)
Cirrus
b)
Stratus
c)
Nimbus
d)
Cumulus
|
|
Shounak Malik answered |
Explanation: Cirrus clouds are formed at high altitudes (8,000 - 12,000m). They are thin and detatched clouds having a feathery appearance. They are always white in colour.
Consider the following statements: - The Earth's lithosphere includes both the crust and the upper mantle.
- The asthenosphere is a rigid layer located beneath the lithosphere.
- The movement of tectonic plates is driven by convection currents in the mantle.
How many of the statements given above are correct?- a)Only one
- b)Only two
- c)All three
- d)None
Correct answer is option 'B'. Can you explain this answer?
Consider the following statements:
- The Earth's lithosphere includes both the crust and the upper mantle.
- The asthenosphere is a rigid layer located beneath the lithosphere.
- The movement of tectonic plates is driven by convection currents in the mantle.
How many of the statements given above are correct?
a)
Only one
b)
Only two
c)
All three
d)
None
|
|
Hridoy Pillai answered |
Explanation:
Earth's Lithosphere:
- The Earth's lithosphere is composed of both the crust (the outermost layer) and the upper mantle.
- This layer is relatively rigid and brittle, and it is broken up into tectonic plates that float on the semi-fluid asthenosphere below.
Asthenosphere:
- The asthenosphere is a semi-fluid layer located beneath the rigid lithosphere.
- Unlike the lithosphere, the asthenosphere is capable of flow over long periods of time.
Movement of Tectonic Plates:
- The movement of tectonic plates is indeed driven by convection currents in the mantle.
- Heat from the Earth's core causes convection currents in the mantle, which in turn cause the movement of the tectonic plates.
Therefore, out of the three statements given, only the second and third statements are correct. The lithosphere includes the crust and the upper mantle, and the movement of tectonic plates is driven by convection currents in the mantle. The first statement is incorrect in stating that the asthenosphere is rigid, as it is actually semi-fluid.
Earth's Lithosphere:
- The Earth's lithosphere is composed of both the crust (the outermost layer) and the upper mantle.
- This layer is relatively rigid and brittle, and it is broken up into tectonic plates that float on the semi-fluid asthenosphere below.
Asthenosphere:
- The asthenosphere is a semi-fluid layer located beneath the rigid lithosphere.
- Unlike the lithosphere, the asthenosphere is capable of flow over long periods of time.
Movement of Tectonic Plates:
- The movement of tectonic plates is indeed driven by convection currents in the mantle.
- Heat from the Earth's core causes convection currents in the mantle, which in turn cause the movement of the tectonic plates.
Therefore, out of the three statements given, only the second and third statements are correct. The lithosphere includes the crust and the upper mantle, and the movement of tectonic plates is driven by convection currents in the mantle. The first statement is incorrect in stating that the asthenosphere is rigid, as it is actually semi-fluid.
The Andaman islands were hit by a tsunami in the year- a)2001
- b)2002
- c)2012
- d)2004
Correct answer is option 'D'. Can you explain this answer?
The Andaman islands were hit by a tsunami in the year
a)
2001
b)
2002
c)
2012
d)
2004
|
Goel UPSC Coaching Center answered |
A tsunami is a series of waves caused by earthquakes or undersea volcanic eruptions.
Lines joining places of equal rainfall are known as- a)Isotherms
- b)Isobars
- c)Isohots
- d)Isohyets
Correct answer is option 'D'. Can you explain this answer?
Lines joining places of equal rainfall are known as
a)
Isotherms
b)
Isobars
c)
Isohots
d)
Isohyets
|
Varun Kapoor answered |
Rainfall and air moisture. An isohyet or isohyetal line (from ὕετος or huetos, meaning 'rain') is a line joining points of equal rainfall on a map in a given period . A map with isohyets is called an isohyetal map.
Cyclones are called “Willy-Willies” in- a) Australia
- b) China
- c) India
- d) Canada
Correct answer is option 'A'. Can you explain this answer?
Cyclones are called “Willy-Willies” in
a)
Australia
b)
China
c)
India
d)
Canada
|
|
Hrishikesh Iyer answered |
Answer: a)
Explanation: They are known as Cyclones in the Indian Ocean, Hurricanes in the Atlantic, Typhoons in the Western Pacific and South China Sea, and Willy-willies in the Western Australia.
The movement of ocean currents is influenced by many factors which include:1. Temperature2. Salinity3. Earth’s rotationSelect the correct answer using the codes given below.- a)1 and 2 only
- b)1 and 3 only
- c)2 and 3 only
- d)1, 2 and 3
Correct answer is option 'D'. Can you explain this answer?
The movement of ocean currents is influenced by many factors which include:
1. Temperature
2. Salinity
3. Earth’s rotation
Select the correct answer using the codes given below.
a)
1 and 2 only
b)
1 and 3 only
c)
2 and 3 only
d)
1, 2 and 3
|
|
Anand Verma answered |
Answer: d)
Explanation: Westerly jet stream blows over the northern Indian region in winter. The westerly jet stream is replaced by the easterly jet stream during summer. This helps in the onset of monsoon.
Ports in Western Europe are ice free while those in Canada at the same latitude are frozen. This is because:- a)Effect of continentality on the Canadian ports due to huge landmass of North America.
- b)Western Europe is touched by warm Gulf Stream current.
- c)Many industries in the western coastal Europe increase its temperature.
- d)Both (a) and (b)
Correct answer is option 'B'. Can you explain this answer?
Ports in Western Europe are ice free while those in Canada at the same latitude are frozen. This is because:
a)
Effect of continentality on the Canadian ports due to huge landmass of North America.
b)
Western Europe is touched by warm Gulf Stream current.
c)
Many industries in the western coastal Europe increase its temperature.
d)
Both (a) and (b)
|
|
Srestha Bajaj answered |
Answer: b)
Explanation: Please go through the India Physical map for hills, rivers, passes etc. Lushai hills are also called Mizo hills, so that can give a hint that Mizo hills should be south of Naga hills.
Consider the following statements: - The shadow zone of S-waves is created because they cannot travel through the Earth's liquid outer core.
- The Earth's outer core was deduced to be solid due to the behavior of S-waves.
- P-waves can be refracted by the liquid outer core, creating a shadow zone.
How many of the statements given above are correct?- a)Only one
- b)Only two
- c)All three
- d)None
Correct answer is option 'B'. Can you explain this answer?
Consider the following statements:
- The shadow zone of S-waves is created because they cannot travel through the Earth's liquid outer core.
- The Earth's outer core was deduced to be solid due to the behavior of S-waves.
- P-waves can be refracted by the liquid outer core, creating a shadow zone.
How many of the statements given above are correct?
a)
Only one
b)
Only two
c)
All three
d)
None
|
|
Aaditya Choudhury answered |
Correct Answer: b) Only two
Explanation:
Shadow Zone of S-waves
- The shadow zone of S-waves is created because they cannot travel through the Earth's liquid outer core.
- S-waves are unable to pass through the liquid outer core and are therefore blocked, resulting in a shadow zone on the opposite side of the Earth from the earthquake epicenter.
Behavior of S-waves
- The Earth's outer core was not deduced to be solid but rather liquid due to the behavior of S-waves.
- S-waves can only travel through solid materials, and since they are unable to travel through the outer core, it was determined that the outer core is liquid.
Refraction of P-waves
- P-waves can indeed be refracted by the liquid outer core, but this does not create a shadow zone.
- Instead, P-waves are refracted when they pass through different mediums, such as the solid inner core and the liquid outer core, causing them to change direction but not creating a shadow zone.
Therefore, only the first and second statements are correct, making option b) Only two the correct choice.
Explanation:
Shadow Zone of S-waves
- The shadow zone of S-waves is created because they cannot travel through the Earth's liquid outer core.
- S-waves are unable to pass through the liquid outer core and are therefore blocked, resulting in a shadow zone on the opposite side of the Earth from the earthquake epicenter.
Behavior of S-waves
- The Earth's outer core was not deduced to be solid but rather liquid due to the behavior of S-waves.
- S-waves can only travel through solid materials, and since they are unable to travel through the outer core, it was determined that the outer core is liquid.
Refraction of P-waves
- P-waves can indeed be refracted by the liquid outer core, but this does not create a shadow zone.
- Instead, P-waves are refracted when they pass through different mediums, such as the solid inner core and the liquid outer core, causing them to change direction but not creating a shadow zone.
Therefore, only the first and second statements are correct, making option b) Only two the correct choice.
Which of the following statement is NOT correct?- a) The oceanic circulation pattern roughly corresponds to the earth’s atmospheric circulation pattern.
- b) The air circulation over the oceans in the middle latitudes is mainly anticyclonic.
- c) The air circulation over the oceans in the higher latitudes is mainly anticyclonic.
- d) None of the above
Correct answer is option 'C'. Can you explain this answer?
Which of the following statement is NOT correct?
a)
The oceanic circulation pattern roughly corresponds to the earth’s atmospheric circulation pattern.
b)
The air circulation over the oceans in the middle latitudes is mainly anticyclonic.
c)
The air circulation over the oceans in the higher latitudes is mainly anticyclonic.
d)
None of the above
|
|
Akanksha Ahuja answered |
Answer: c)
Explanation: Major ocean currents are greatly influenced by the stresses exerted by the prevailing winds and coriolis force. The oceanic circulation pattern roughly corresponds to the earth’s atmospheric circulation pattern. The air circulation over the oceans in the middle latitudes is mainly anticyclonic (more pronounced in the southern hemisphere than in the northern hemisphere). The oceanic circulation pattern also corresponds with the same. At higher latitudes, where the wind flow is mostly cyclonic, the oceanic circulation follows this pattern.
Monsoon in India is said to be essentially pulsating in nature. This means- a) They are influenced by jet streams.
- b) They occur in wet spells of few days duration at a time.
- c) Ocean current like el-nino impacts the monsoon
- d) None
Correct answer is option 'B'. Can you explain this answer?
Monsoon in India is said to be essentially pulsating in nature. This means
a)
They are influenced by jet streams.
b)
They occur in wet spells of few days duration at a time.
c)
Ocean current like el-nino impacts the monsoon
d)
None
|
|
Sonal Basak answered |
Answer: b)
Explanation: They occur in wet spells of few days duration at a time.
Latitude is the angular distance of a point on earth’s surface measured from the:- a)Prime meridian
- b)Equator
- c)Centre of earth
- d)Poles
Correct answer is option 'C'. Can you explain this answer?
Latitude is the angular distance of a point on earth’s surface measured from the:
a)
Prime meridian
b)
Equator
c)
Centre of earth
d)
Poles
|
|
Raksha Ahuja answered |
Latitude Definition:
Latitude is the angular distance of a point on Earth's surface measured from the center of the Earth.
Explanation:
- Prime Meridian: The prime meridian is the line of 0 degrees longitude, not latitude. It is used as the starting point for measuring longitude.
- Equator: The equator is the line of 0 degrees latitude which divides the Earth into the Northern Hemisphere and Southern Hemisphere. Latitude is measured from the equator in degrees north or south.
- Center of Earth: Latitude is measured from the center of the Earth because it represents the angle between a point on the Earth's surface and the equatorial plane passing through the center of the Earth.
- Poles: The poles are located at 90 degrees latitude, either 90 degrees north (North Pole) or 90 degrees south (South Pole). They are the farthest points from the equator on Earth.
When determining the latitude of a specific location on Earth, it is measured in degrees north or south from the equator. The latitude lines run parallel to the equator and help in locating positions on the Earth's surface. The center of the Earth is the reference point from which latitude is measured as it provides a common starting point for all locations on Earth.
Latitude is the angular distance of a point on Earth's surface measured from the center of the Earth.
Explanation:
- Prime Meridian: The prime meridian is the line of 0 degrees longitude, not latitude. It is used as the starting point for measuring longitude.
- Equator: The equator is the line of 0 degrees latitude which divides the Earth into the Northern Hemisphere and Southern Hemisphere. Latitude is measured from the equator in degrees north or south.
- Center of Earth: Latitude is measured from the center of the Earth because it represents the angle between a point on the Earth's surface and the equatorial plane passing through the center of the Earth.
- Poles: The poles are located at 90 degrees latitude, either 90 degrees north (North Pole) or 90 degrees south (South Pole). They are the farthest points from the equator on Earth.
When determining the latitude of a specific location on Earth, it is measured in degrees north or south from the equator. The latitude lines run parallel to the equator and help in locating positions on the Earth's surface. The center of the Earth is the reference point from which latitude is measured as it provides a common starting point for all locations on Earth.
Which of the following statements is NOT correct?- a) The continental shelf is the extended margin of a continent.
- b) It is the shallowest part of the ocean.
- c) It has an average gradient of 3° or even less.
- d) None of the above
Correct answer is option 'C'. Can you explain this answer?
Which of the following statements is NOT correct?
a)
The continental shelf is the extended margin of a continent.
b)
It is the shallowest part of the ocean.
c)
It has an average gradient of 3° or even less.
d)
None of the above
|
|
Hrishikesh Iyer answered |
Answer: c)
Explanation: The continental shelf is the extended margin of each continent occupied by relatively shallow seas and gulfs. It is the shallowest part of the ocean showing an average gradient of 1° or even less. The shelf typically ends at a very steep slope, called the shelf break.
Upward and downward movement of ocean water is known as the :- a) Tide
- b) Current
- c) Wave
- d) None of the above
Correct answer is option 'C'. Can you explain this answer?
Upward and downward movement of ocean water is known as the :
a)
Tide
b)
Current
c)
Wave
d)
None of the above
|
|
Dhruba Ghoshal answered |
Tides
Tides refer to the regular rise and fall of ocean water. The rise and fall of ocean water are caused by the gravitational force of the moon and the sun on the Earth's oceans. The gravitational force of the moon is stronger on the side of the Earth facing the moon, and weaker on the opposite side of the Earth. This causes a bulge of water on the side facing the moon, and a bulge of water on the opposite side of the Earth.
High Tide
High tide refers to the point in time when ocean water is at its highest level. This occurs when the gravitational force of the moon and the sun are in alignment, creating a stronger gravitational pull on the Earth's oceans. High tide occurs twice a day, roughly every 12 hours and 25 minutes.
Low Tide
Low tide refers to the point in time when ocean water is at its lowest level. This occurs when the gravitational force of the moon and the sun are not in alignment, creating a weaker gravitational pull on the Earth's oceans. Low tide also occurs twice a day, roughly every 12 hours and 25 minutes.
Importance of Tides
Tides are important for a variety of reasons. They affect navigation and shipping, as the depth of water changes with the tides. They also affect marine life, as many marine organisms rely on the tides for feeding and breeding. Tides can also be harnessed for renewable energy, such as tidal power.
Conclusion
Tides refer to the regular rise and fall of ocean water, caused by the gravitational force of the moon and the sun on the Earth's oceans. High tide and low tide occur twice a day, roughly every 12 hours and 25 minutes. Tides are important for navigation, marine life, and renewable energy.
Tides refer to the regular rise and fall of ocean water. The rise and fall of ocean water are caused by the gravitational force of the moon and the sun on the Earth's oceans. The gravitational force of the moon is stronger on the side of the Earth facing the moon, and weaker on the opposite side of the Earth. This causes a bulge of water on the side facing the moon, and a bulge of water on the opposite side of the Earth.
High Tide
High tide refers to the point in time when ocean water is at its highest level. This occurs when the gravitational force of the moon and the sun are in alignment, creating a stronger gravitational pull on the Earth's oceans. High tide occurs twice a day, roughly every 12 hours and 25 minutes.
Low Tide
Low tide refers to the point in time when ocean water is at its lowest level. This occurs when the gravitational force of the moon and the sun are not in alignment, creating a weaker gravitational pull on the Earth's oceans. Low tide also occurs twice a day, roughly every 12 hours and 25 minutes.
Importance of Tides
Tides are important for a variety of reasons. They affect navigation and shipping, as the depth of water changes with the tides. They also affect marine life, as many marine organisms rely on the tides for feeding and breeding. Tides can also be harnessed for renewable energy, such as tidal power.
Conclusion
Tides refer to the regular rise and fall of ocean water, caused by the gravitational force of the moon and the sun on the Earth's oceans. High tide and low tide occur twice a day, roughly every 12 hours and 25 minutes. Tides are important for navigation, marine life, and renewable energy.
Which of the following is NOT a Direct source for obtaining information about the interior of earth?- a)Volcanic eruption
- b)Meteorites
- c)Mines
- d)All of the above
Correct answer is option 'B'. Can you explain this answer?
Which of the following is NOT a Direct source for obtaining information about the interior of earth?
a)
Volcanic eruption
b)
Meteorites
c)
Mines
d)
All of the above
|
|
Tarun Datta answered |
Explanation:
Direct Sources for Obtaining Information about the Interior of Earth:
- Volcanic Eruption: Volcanic eruptions provide direct access to materials from the Earth's interior. When volcanoes erupt, molten rock (magma) from the mantle is brought to the surface, providing valuable insights into the composition and temperature of the Earth's interior.
- Mines: Mines can also provide valuable information about the Earth's interior. By extracting rocks and minerals from deep within the Earth's crust, geologists can study the composition, structure, and physical properties of the materials that make up the Earth's interior.
Not a Direct Source for Obtaining Information about the Interior of Earth:
- Meteorites: Meteorites are not a direct source of information about the Earth's interior. While meteorites can provide valuable insights into the composition of the early solar system, they do not originate from within the Earth and therefore do not offer direct information about its interior.
Therefore, the correct answer is option 'B' - Meteorites. Meteorites are not a direct source for obtaining information about the interior of the Earth, unlike volcanic eruptions and mines.
Direct Sources for Obtaining Information about the Interior of Earth:
- Volcanic Eruption: Volcanic eruptions provide direct access to materials from the Earth's interior. When volcanoes erupt, molten rock (magma) from the mantle is brought to the surface, providing valuable insights into the composition and temperature of the Earth's interior.
- Mines: Mines can also provide valuable information about the Earth's interior. By extracting rocks and minerals from deep within the Earth's crust, geologists can study the composition, structure, and physical properties of the materials that make up the Earth's interior.
Not a Direct Source for Obtaining Information about the Interior of Earth:
- Meteorites: Meteorites are not a direct source of information about the Earth's interior. While meteorites can provide valuable insights into the composition of the early solar system, they do not originate from within the Earth and therefore do not offer direct information about its interior.
Therefore, the correct answer is option 'B' - Meteorites. Meteorites are not a direct source for obtaining information about the interior of the Earth, unlike volcanic eruptions and mines.
Which earthquake measuring scale is based on Earth’s rigidity and the amount and area of slip on the fault?- a)Richter magnitude scale
- b)Moment magnitude scale
- c)Saffir-Simpson scale
- d)Mercalli intensity scale
Correct answer is option 'B'. Can you explain this answer?
Which earthquake measuring scale is based on Earth’s rigidity and the amount and area of slip on the fault?
a)
Richter magnitude scale
b)
Moment magnitude scale
c)
Saffir-Simpson scale
d)
Mercalli intensity scale
|
|
Goel UPSC Coaching Center answered |
The correct answer is the Moment magnitude scale.
An earthquake is the sudden release of strain energy in the Earth’s crust resulting in waves of shaking that radiate outwards from the earthquake source. An earthquake is the result of plate tectonic activities.
The phenomenon of an opening occurring in the earth's surface through which a jet of hot water and steam is forced out at regular intervals, is called- a)Gorge
- b)Stream
- c)Geyser
- d)Canyon
Correct answer is option 'C'. Can you explain this answer?
The phenomenon of an opening occurring in the earth's surface through which a jet of hot water and steam is forced out at regular intervals, is called
a)
Gorge
b)
Stream
c)
Geyser
d)
Canyon
|
|
Debanshi Desai answered |
The Phenomenon of Geysers
A geyser is a natural phenomenon that occurs when there is an opening in the Earth's surface through which hot water and steam are forcefully ejected at regular intervals. This happens because of the accumulation of water that seeps deep into the Earth's surface and comes into contact with hot rocks and magma. The water is heated and turned into steam, which creates pressure and forces the hot water and steam to the surface through the opening in the Earth's crust.
The Formation of Geysers
The formation of geysers requires a few essential elements. These include:
1. Heat source: Geysers require a heat source to heat the water to boiling point. This heat source can be either magma or hot rocks deep below the Earth's surface.
2. Water source: Geysers require a source of water to produce the steam that is ejected from the surface. This water can come from rainfall or snowmelt that seeps into the ground.
3. A reservoir: Geysers require a reservoir to store the hot water and steam until enough pressure builds up to force it out of the surface.
4. A vent: Geysers require a vent through which the hot water and steam can be ejected.
Famous Geysers
Some of the most famous geysers in the world include:
1. Old Faithful: located in Yellowstone National Park in the United States, Old Faithful erupts every 60-90 minutes and can shoot water up to 185 feet in the air.
2. Strokkur: located in Iceland, Strokkur erupts every 6-10 minutes and can shoot water up to 100 feet in the air.
3. El Tatio: located in Chile, El Tatio is one of the highest-elevation geysers in the world, erupting at heights of up to 75 feet.
Conclusion
Geysers are a fascinating natural phenomenon that have captured the imagination of people for centuries. They are a reminder of the incredible power and beauty of nature and provide a glimpse into the inner workings of the Earth's crust.
A geyser is a natural phenomenon that occurs when there is an opening in the Earth's surface through which hot water and steam are forcefully ejected at regular intervals. This happens because of the accumulation of water that seeps deep into the Earth's surface and comes into contact with hot rocks and magma. The water is heated and turned into steam, which creates pressure and forces the hot water and steam to the surface through the opening in the Earth's crust.
The Formation of Geysers
The formation of geysers requires a few essential elements. These include:
1. Heat source: Geysers require a heat source to heat the water to boiling point. This heat source can be either magma or hot rocks deep below the Earth's surface.
2. Water source: Geysers require a source of water to produce the steam that is ejected from the surface. This water can come from rainfall or snowmelt that seeps into the ground.
3. A reservoir: Geysers require a reservoir to store the hot water and steam until enough pressure builds up to force it out of the surface.
4. A vent: Geysers require a vent through which the hot water and steam can be ejected.
Famous Geysers
Some of the most famous geysers in the world include:
1. Old Faithful: located in Yellowstone National Park in the United States, Old Faithful erupts every 60-90 minutes and can shoot water up to 185 feet in the air.
2. Strokkur: located in Iceland, Strokkur erupts every 6-10 minutes and can shoot water up to 100 feet in the air.
3. El Tatio: located in Chile, El Tatio is one of the highest-elevation geysers in the world, erupting at heights of up to 75 feet.
Conclusion
Geysers are a fascinating natural phenomenon that have captured the imagination of people for centuries. They are a reminder of the incredible power and beauty of nature and provide a glimpse into the inner workings of the Earth's crust.
Consider the following statements and identify the right ones. - Lower layers of atmosphere have low pressure
- Higher layers of atmosphere have high pressure.
Lower layers of atmosphere have high pressure because the density is greatest at lower layers and are compressed. Higher layers of atmosphere have low pressure because they are less compressed.- a)1 only
- b)2 only
- c)Both 1 & 2
- d)None
Correct answer is option 'D'. Can you explain this answer?
Consider the following statements and identify the right ones.
- Lower layers of atmosphere have low pressure
- Higher layers of atmosphere have high pressure.
Lower layers of atmosphere have high pressure because the density is greatest at lower layers and are compressed. Higher layers of atmosphere have low pressure because they are less compressed.
a)
1 only
b)
2 only
c)
Both 1 & 2
d)
None
|
Divyansh Singh answered |
And 2
d)Neither 1 nor 2
The correct answer is c) Both 1 and 2. Lower layers of atmosphere have low pressure because the weight of the air above them creates more pressure. As we move higher in the atmosphere, the weight of the air above decreases, resulting in lower pressure. However, at a certain altitude, the pressure starts increasing again due to the decreasing density of air and the presence of different gases like ozone, resulting in higher pressure at higher layers of the atmosphere.
d)Neither 1 nor 2
The correct answer is c) Both 1 and 2. Lower layers of atmosphere have low pressure because the weight of the air above them creates more pressure. As we move higher in the atmosphere, the weight of the air above decreases, resulting in lower pressure. However, at a certain altitude, the pressure starts increasing again due to the decreasing density of air and the presence of different gases like ozone, resulting in higher pressure at higher layers of the atmosphere.
Consider the following statements and identify the right ones.
i ) The gradual dissipation of the frontal zone is called frontogensis.
ii) The process by which two air masses of different physical characteristics are brought together is frontolysis.- a)i only
- b)ii only
- c)Both
- d)None
Correct answer is option 'D'. Can you explain this answer?
Consider the following statements and identify the right ones.
i ) The gradual dissipation of the frontal zone is called frontogensis.
ii) The process by which two air masses of different physical characteristics are brought together is frontolysis.
i ) The gradual dissipation of the frontal zone is called frontogensis.
ii) The process by which two air masses of different physical characteristics are brought together is frontolysis.
a)
i only
b)
ii only
c)
Both
d)
None
|
|
Dishani Sarkar answered |
Explanation: The gradual dissipation of the frontal zone is called frontolysis. The process by which two air masses of different physical characteristics are brought together is Frontogensis and it leads to the formation of a temperate cyclone.
Which of the following is a metamorphic rock?- a)Slate
- b)Sandstone
- c)Peat
- d) Limestone
Correct answer is option 'A'. Can you explain this answer?
Which of the following is a metamorphic rock?
a)
Slate
b)
Sandstone
c)
Peat
d)
Limestone
|
Gitanjali Bajaj answered |
Explanation: Sedimentary rock turns into a different kind of metamorphic rock -limestone turns into travertine or marble, and shale turns into slate, and sandstone turns into quartzite. Even though slate is a metamorphic rock, it still looks a lot like a sedimentary rock - it is still in thin layers.
Chapter doubts & questions for Introduction to Physiographic Regions - Geography for State PSC Exams 2025 is part of BPSC (Bihar) exam preparation. The chapters have been prepared according to the BPSC (Bihar) exam syllabus. The Chapter doubts & questions, notes, tests & MCQs are made for BPSC (Bihar) 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests here.
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