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All questions of Class 11 Fundamentals of Physical Geography for CTET & State TET Exam
The radiations that heat earth’s atmosphere, comes from the- a)Sun
- b)Earth
- c)Ionosphere
- d)Sun and Earth
Correct answer is option 'B'. Can you explain this answer?
The radiations that heat earth’s atmosphere, comes from the
a)
Sun
b)
Earth
c)
Ionosphere
d)
Sun and Earth
|
Asha Yadav answered |
The primary source of radiation that heats the Earth is the Sun. The Sun emits electromagnetic radiation, including visible light, ultraviolet radiation, and infrared radiation. As this radiation travels through space, it reaches the Earth's atmosphere and is absorbed, reflected, or scattered by various gases, particles, and surfaces.
The Earth's atmosphere also emits radiation, particularly in the form of infrared radiation, which is re-radiated back towards the Earth's surface. This process is known as the greenhouse effect, and it helps to trap heat in the Earth's atmosphere, making it possible for life to exist on the planet.
Other sources of radiation that contribute to the heating of the Earth include cosmic rays, which are high-energy particles that come from outer space and can penetrate the Earth's atmosphere, and radioactive decay, which generates heat within the Earth's core. However, these sources are much less significant than the Sun in terms of their contribution to the Earth's overall heat budget.
The Earth's atmosphere also emits radiation, particularly in the form of infrared radiation, which is re-radiated back towards the Earth's surface. This process is known as the greenhouse effect, and it helps to trap heat in the Earth's atmosphere, making it possible for life to exist on the planet.
Other sources of radiation that contribute to the heating of the Earth include cosmic rays, which are high-energy particles that come from outer space and can penetrate the Earth's atmosphere, and radioactive decay, which generates heat within the Earth's core. However, these sources are much less significant than the Sun in terms of their contribution to the Earth's overall heat budget.
The envelop of the air is called _________- a)Atmosphere
- b)Troposphere
- c)Stratosphere
- d)None
Correct answer is option 'A'. Can you explain this answer?
The envelop of the air is called _________
a)
Atmosphere
b)
Troposphere
c)
Stratosphere
d)
None
|
|
Chhavi Tripathi answered |
ATMOSPHERE is the correct answer.
The envelope of air around the earth is called ATMOSPHERE.
This is called atmosphere. The force of gravity holds this atmosphere near the earth.
I hope you got your answer
The envelope of air around the earth is called ATMOSPHERE.
This is called atmosphere. The force of gravity holds this atmosphere near the earth.
I hope you got your answer
The uppermost layer of the atmosphere is- a)mesosphere.
- b)exosphere.
- c)ionosphere.
- d)stratosphere.
Correct answer is option 'B'. Can you explain this answer?
The uppermost layer of the atmosphere is
a)
mesosphere.
b)
exosphere.
c)
ionosphere.
d)
stratosphere.
|
Shanmugarajan Gurusamy answered |
The upper most layer of the earth is exosphere. because it is the last layer and in this layer nitrogen present and no living beings can't be live
The continental drift theory was propounded by- a)Alfred Wegner.
- b)Aortelius.
- c)Hall and Danna.
- d)Abraham Ortelius.
Correct answer is option 'A'. Can you explain this answer?
The continental drift theory was propounded by
a)
Alfred Wegner.
b)
Aortelius.
c)
Hall and Danna.
d)
Abraham Ortelius.
|
Anisha Singh answered |
Alfred Wegener—a German meteorologist put forth a comprehensive argument in the form of “the continental drift theory” in 1912.
Maximum insolation is received over the ____________- a)Equator
- b)Tropical areas
- c)Sub-tropical areas
- d)Poles
Correct answer is option 'C'. Can you explain this answer?
Maximum insolation is received over the ____________
a)
Equator
b)
Tropical areas
c)
Sub-tropical areas
d)
Poles
|
Isha Ahuja answered |
Sub-tropical deserts receive maximum amount of insolation because cloudiness is the least there.
Subtropical highs are the areas between- a)30° N and 30° S.
- b)40° N and 40° S.
- c)45° N and 45° S.
- d)50° N and 50° S.
Correct answer is option 'A'. Can you explain this answer?
Subtropical highs are the areas between
a)
30° N and 30° S.
b)
40° N and 40° S.
c)
45° N and 45° S.
d)
50° N and 50° S.
|
|
Hansa Sharma answered |
Subtropical highs are the areas between 30°N and 30° S. These are high pressure areas.
Which of the following gases absorbs ultra violet rays?- a)Carbon Dioxide
- b)Neon
- c)Ozone
- d)Nitrogen
Correct answer is option 'C'. Can you explain this answer?
Which of the following gases absorbs ultra violet rays?
a)
Carbon Dioxide
b)
Neon
c)
Ozone
d)
Nitrogen
|
Vigith Viswam answered |
Ozone splits In to oxygen molecule and oxygen free radical. which is readily recombinable. Thus it's make cyclic process in presence of ultraviolet rays.
Igneous rocks are- a)primary rocks.
- b)secondary rocks.
- c)tertiary rocks.
- d)soft rocks.
Correct answer is option 'A'. Can you explain this answer?
Igneous rocks are
a)
primary rocks.
b)
secondary rocks.
c)
tertiary rocks.
d)
soft rocks.
|
Amit Sharma answered |
The igneous rocks (Ignis – in Latin means ‘Fire’) are formed when magma cools and solidifies. As igneous rocks form out of magma and lava from the interior of the earth, they are known as primary rocks.
If an air mass is fully lifted above the land surface, it is called:- a)Warm front
- b)Cold front
- c)Occluded front
- d)Anticyclones
Correct answer is option 'C'. Can you explain this answer?
If an air mass is fully lifted above the land surface, it is called:
a)
Warm front
b)
Cold front
c)
Occluded front
d)
Anticyclones
|
|
Amit Sharma answered |
An occluded front is formed during the process of cyclogenesis when a cold front overtakes a warm front. When this occurs, the warm air is separated (occluded) from the cyclone center at the Earth's surface.
Transformation of water vapours into water is called- a)evaporation.
- b)condensation.
- c)sublimation.
- d)saturation.
Correct answer is option 'B'. Can you explain this answer?
Transformation of water vapours into water is called
a)
evaporation.
b)
condensation.
c)
sublimation.
d)
saturation.
|
Sai Dey answered |
The transformation of water vapour into water is called condensation. It is caused by the loss of heat.
In weathering ________- a)No motion of material takes place
- b)Materials move from one place to another
- c) The deposition of material takes place
- d)None of the above
Correct answer is option 'A'. Can you explain this answer?
In weathering ________
a)
No motion of material takes place
b)
Materials move from one place to another
c)
The deposition of material takes place
d)
None of the above
|
Pooja Shah answered |
Weathering is an in-situ or on-site process. Very little or no motion of materials takes place in weathering.
The percentage of species that are contained by Tropical rain forests are- a)10%
- b)40%
- c)50%
- d)60%
Correct answer is option 'C'. Can you explain this answer?
The percentage of species that are contained by Tropical rain forests are
a)
10%
b)
40%
c)
50%
d)
60%
|
|
Hrishikesh Jain answered |
Tropical regions occupy about one-fourth of the total area of the earth
Abiotic factors include- a)producers.
- b)consumers.
- c)decomposers.
- d)sunlight
Correct answer is option 'D'. Can you explain this answer?
Abiotic factors include
a)
producers.
b)
consumers.
c)
decomposers.
d)
sunlight
|
|
Mansi Banerjee answered |
All ecosystems consist of abiotic and biotic factors. Abiotic factors include rainfall, temperature, sunlight, atmospheric humidity, soil conditions, inorganic substances. Biotic factors include the producers, consumers and decomposers.
Insolation refers to ________- a)Wind direction
- b)Solar radiation
- c)Precipitation
- d)None
Correct answer is option 'B'. Can you explain this answer?
Insolation refers to ________
a)
Wind direction
b)
Solar radiation
c)
Precipitation
d)
None
|
|
Ræjû Bhæï answered |
Solar radiation is radiant energy emitted by the sun from a nuclear fusion reaction that creates electromagnetic energy. The spectrum of solar radiation is close to that of a black body with a temperature of about 5800 K. About half of the radiation is in the visible short-wave part of the electromagnetic spectrum.
Which one of the following gases constitute the major portion of atmosphere?- a)Oxygen
- b)Nitrogen
- c)Argon
- d)Carbon dioxide
Correct answer is option 'B'. Can you explain this answer?
Which one of the following gases constitute the major portion of atmosphere?
a)
Oxygen
b)
Nitrogen
c)
Argon
d)
Carbon dioxide
|
Mira Sharma answered |
The most abundant gas in our atmosphere is Nitrogen. It constitutes about 78% of our atmosphere.
A non-metallic mineral in the following minerals is- a)silver.
- b)copper.
- c)zinc.
- d)coal.
Correct answer is option 'D'. Can you explain this answer?
A non-metallic mineral in the following minerals is
a)
silver.
b)
copper.
c)
zinc.
d)
coal.
|
Anmol Banerjee answered |
Coal is used as a fossil fuel and is a non-metallic mineral with dull and non-reflective properties and it cannot be moulded in any form.
Increase in the volume of carbon dioxide for the past few decades is mainly due to- a)deforestation.
- b)climate change.
- c)atmospheric composition.
- d)burning of fossil fuels.
Correct answer is option 'D'. Can you explain this answer?
Increase in the volume of carbon dioxide for the past few decades is mainly due to
a)
deforestation.
b)
climate change.
c)
atmospheric composition.
d)
burning of fossil fuels.
|
Somasekhar Kamal answered |
The answer is D. Because,
1. Forests are the sinks for the carbon dioxide. Forests use CO2 in their growth. So, deforestation due to changes in land increases concentration of CO2.
2. The time taken for atmospheric CO2 to adjust to changes in sources to sinks is 20-50 yrs. It is rising at about 0.5 percent annually.
3. In atmosphere CO2 comprises only 0.04 percent.
All the above processes are causing the CO2 conc. to increase in atmosphere in small quantities. However,
4. The emission of CO2 comes mainly from fossil fuels combustion (oil, gas, coal). Which causes more and more pollution and led to global warming. (especially during to industrialization period).
A freshwater ecosystem is- a)oceans.
- b)estuaries.
- c)coral reefs.
- d)marshes.
Correct answer is option 'D'. Can you explain this answer?
A freshwater ecosystem is
a)
oceans.
b)
estuaries.
c)
coral reefs.
d)
marshes.
|
Anand Mukherjee answered |
Aquatic ecosystems can be classed as marine and freshwater ecosystems. Marine ecosystem includes the oceans, coastal estuaries and coral reefs. Freshwater ecosystem includes lakes, ponds, streams, marshes and bogs.
The Thermodynamics of the ocean are:- a)Currents
- b)Waves
- c)Tides
- d)Salinity
Correct answer is option 'D'. Can you explain this answer?
The Thermodynamics of the ocean are:
a)
Currents
b)
Waves
c)
Tides
d)
Salinity
|
Rohit Datta answered |
Thermodynamics of the Ocean: Salinity
Salinity is a critical factor in the thermodynamics of the ocean as it affects the density, temperature, and movement of seawater. Salinity refers to the amount of salt or dissolved minerals in seawater, which is mainly composed of sodium chloride (NaCl) but also contains other elements like magnesium, calcium, and potassium.
How Salinity Affects Density
The density of seawater increases with higher salinity and decreases with lower salinity. This is because saltwater is denser than freshwater due to the added weight of dissolved salts. The density of seawater also increases with decreasing temperature, which is why colder water sinks below warmer water.
How Salinity Affects Temperature
Salinity also affects the temperature of seawater by influencing its heat capacity and thermal conductivity. Saltwater has a higher heat capacity than freshwater, which means it can absorb more heat energy without a significant increase in temperature. This makes it more resistant to temperature changes and helps to regulate the overall temperature of the ocean.
How Salinity Affects Movement
The movement of seawater is also affected by salinity due to its impact on density and temperature. Salinity differences between adjacent bodies of water create density gradients that drive currents and ocean circulation. These density gradients are particularly pronounced in areas where freshwater enters the ocean, such as at river mouths or near melting ice sheets.
Conclusion
In conclusion, salinity is a critical factor in the thermodynamics of the ocean, affecting its density, temperature, and movement. Understanding these complex interactions is crucial for predicting and managing the impacts of climate change on the ocean and its ecosystems.
Salinity is a critical factor in the thermodynamics of the ocean as it affects the density, temperature, and movement of seawater. Salinity refers to the amount of salt or dissolved minerals in seawater, which is mainly composed of sodium chloride (NaCl) but also contains other elements like magnesium, calcium, and potassium.
How Salinity Affects Density
The density of seawater increases with higher salinity and decreases with lower salinity. This is because saltwater is denser than freshwater due to the added weight of dissolved salts. The density of seawater also increases with decreasing temperature, which is why colder water sinks below warmer water.
How Salinity Affects Temperature
Salinity also affects the temperature of seawater by influencing its heat capacity and thermal conductivity. Saltwater has a higher heat capacity than freshwater, which means it can absorb more heat energy without a significant increase in temperature. This makes it more resistant to temperature changes and helps to regulate the overall temperature of the ocean.
How Salinity Affects Movement
The movement of seawater is also affected by salinity due to its impact on density and temperature. Salinity differences between adjacent bodies of water create density gradients that drive currents and ocean circulation. These density gradients are particularly pronounced in areas where freshwater enters the ocean, such as at river mouths or near melting ice sheets.
Conclusion
In conclusion, salinity is a critical factor in the thermodynamics of the ocean, affecting its density, temperature, and movement. Understanding these complex interactions is crucial for predicting and managing the impacts of climate change on the ocean and its ecosystems.
Higher latitudes are not permanently frozen because of- a)Presence of warm and cold currents
- b)very less insolation
- c)redistribution of surplus heat energy pole wards from tropics
- d)Local aspects
Correct answer is option 'C'. Can you explain this answer?
Higher latitudes are not permanently frozen because of
a)
Presence of warm and cold currents
b)
very less insolation
c)
redistribution of surplus heat energy pole wards from tropics
d)
Local aspects
|
|
Poonam Reddy answered |
There is a surplus of net radiation balance between 40 degrees north and south and the regions near the poles have a deficit. The surplus heat energy from the tropics is redistributed pole wards and as a result the tropics do not get progressively heated up due to the accumulation of excess heat or the high latitudes get permanently frozen due to excess deficit.
Which one of the following is not a minor relief feature in the oceans:- a)Seamount
- b)Atoll
- c)Oceanic Deep
- d)Guyot
Correct answer is option 'C'. Can you explain this answer?
Which one of the following is not a minor relief feature in the oceans:
a)
Seamount
b)
Atoll
c)
Oceanic Deep
d)
Guyot
|
Hridoy Jain answered |
Oceanic deeps of submarine trenches:
Deep narrow steep sided depression is found along the abyssal plain.
The depth of these trenches may vary from 6,000 to 11,000 m. Example, Marina trenches is the deepest trench in Pacific Ocean.
Trenches are formed as a result of tectonic forces and normally occur along the marines of Pacific Ocean.
They occur at the base of the continental slopes and along the island area. Normally associated with volcanoes and strong earthquake.
There are 32 trenches in Pacific Ocean, 19 in Atlantic Ocean and just 6 in Indian Ocean.
Sea salt, pollen, ash, smoke, soot, fine soil, these all are associated with __________- a)Gases
- b)Dust particles
- c)Water vapours
- d)Meteors
Correct answer is option 'B'. Can you explain this answer?
Sea salt, pollen, ash, smoke, soot, fine soil, these all are associated with __________
a)
Gases
b)
Dust particles
c)
Water vapours
d)
Meteors
|
|
Ræjû Bhæï answered |
Dust is made of fine particles of solid matter. On Earth, it generally consists of particles in the atmosphere that come from various sources such as soil, dust lifted by wind (an aeolian process), volcanic eruptions, and pollution.Dust in homes, smoke,ash,offices, and other human environments contains small amounts of plant pollen, human and animal hairs, textile fibers, paper fibers, minerals from outdoor soil, human skin cells, burnt meteorite particles, and many other materials which may be found in the local environment.
In which one of the following cities, are the days the longest in Summar?
- a)Chandigarh.
- b)Hyderabad.
- c)Thiruvananthapuram.
- d)Nagpur.
Correct answer is option 'A'. Can you explain this answer?
In which one of the following cities, are the days the longest in Summar?
a)
Chandigarh.
b)
Hyderabad.
c)
Thiruvananthapuram.
d)
Nagpur.
|
Vijay Kumar answered |
In summer (March to September), in the northern hemisphere, as we move northwards, the length of the day increases. But in winter (September to March) the length of the night increases as we move northwards. since Chandigarh is northernmost among the options
The heat energy absorbed by a known area in a fixed time is determined with the help of an instrument called- a)Psychrometer
- b)Pyrheliometer
- c)Thermometric well
- d)Any instrument
Correct answer is option 'B'. Can you explain this answer?
The heat energy absorbed by a known area in a fixed time is determined with the help of an instrument called
a)
Psychrometer
b)
Pyrheliometer
c)
Thermometric well
d)
Any instrument
|
|
Ræjû Bhæï answered |
A pyrheliometer is an instrument for measurement of direct beam solar irradiance. Sunlight enters the instrument through a window and is directed onto a thermopile which converts heat to an electrical signal that can be recorded. The signal voltage is converted via a formula to measure watts per square metre.
Who is the poet of the poem 'The Voice of the Rain'?- a)Walt Whitman
- b)Kushwant Singh
- c)Naipul
- d)Shirley Toulson
Correct answer is option 'A'. Can you explain this answer?
Who is the poet of the poem 'The Voice of the Rain'?
a)
Walt Whitman
b)
Kushwant Singh
c)
Naipul
d)
Shirley Toulson
|
|
Arnab Gupta answered |
The Voice of the Rain is a poem written by Walt Whitman.
Walt Whitman:
- Whitman was an American poet, essayist, and journalist who lived from 1819 to 1892.
- He is often referred to as the father of free verse and is considered one of the most influential poets in American literature.
- Whitman's poetry is known for its celebration of nature, democracy, and the human spirit.
- His collection of poems, Leaves of Grass, is his most famous work and includes "The Voice of the Rain."
The Voice of the Rain:
- "The Voice of the Rain" is a short poem that captures the essence of rain and its connection to human emotions.
- In the poem, the rain speaks directly to the reader, expressing its purpose and impact.
- Whitman personifies the rain, giving it human characteristics and a voice.
- The rain is portrayed as a gentle, soothing presence that brings comfort and inspiration.
- It is described as a messenger from nature, carrying messages of renewal and cleansing.
- The rain's voice is described as "a monotonous chant" that resonates with the reader's soul.
- Whitman uses vivid imagery and sensory language to evoke the sounds, smells, and sensations of rain.
- The poem explores themes of unity, interconnectedness, and the power of nature to heal and rejuvenate.
Importance and Analysis:
- "The Voice of the Rain" is a prime example of Whitman's poetic style, which emphasizes the beauty and significance of everyday experiences.
- The poem celebrates the simple act of rain falling and highlights its transformative qualities.
- Through his vivid descriptions and lyrical language, Whitman invites the reader to connect with nature on a deeper level.
- The rain becomes a metaphor for life, offering solace, renewal, and a sense of unity with the natural world.
- Whitman's ability to capture the essence of rain and convey its emotional impact demonstrates his mastery as a poet.
Conclusion:
- Walt Whitman is the poet of the poem "The Voice of the Rain."
- Through his lyrical language and vivid imagery, he brings the rain to life and explores its profound impact on the human spirit.
Walt Whitman:
- Whitman was an American poet, essayist, and journalist who lived from 1819 to 1892.
- He is often referred to as the father of free verse and is considered one of the most influential poets in American literature.
- Whitman's poetry is known for its celebration of nature, democracy, and the human spirit.
- His collection of poems, Leaves of Grass, is his most famous work and includes "The Voice of the Rain."
The Voice of the Rain:
- "The Voice of the Rain" is a short poem that captures the essence of rain and its connection to human emotions.
- In the poem, the rain speaks directly to the reader, expressing its purpose and impact.
- Whitman personifies the rain, giving it human characteristics and a voice.
- The rain is portrayed as a gentle, soothing presence that brings comfort and inspiration.
- It is described as a messenger from nature, carrying messages of renewal and cleansing.
- The rain's voice is described as "a monotonous chant" that resonates with the reader's soul.
- Whitman uses vivid imagery and sensory language to evoke the sounds, smells, and sensations of rain.
- The poem explores themes of unity, interconnectedness, and the power of nature to heal and rejuvenate.
Importance and Analysis:
- "The Voice of the Rain" is a prime example of Whitman's poetic style, which emphasizes the beauty and significance of everyday experiences.
- The poem celebrates the simple act of rain falling and highlights its transformative qualities.
- Through his vivid descriptions and lyrical language, Whitman invites the reader to connect with nature on a deeper level.
- The rain becomes a metaphor for life, offering solace, renewal, and a sense of unity with the natural world.
- Whitman's ability to capture the essence of rain and convey its emotional impact demonstrates his mastery as a poet.
Conclusion:
- Walt Whitman is the poet of the poem "The Voice of the Rain."
- Through his lyrical language and vivid imagery, he brings the rain to life and explores its profound impact on the human spirit.
Growth in human population has increased the rate of- a)death per year.
- b)conservation of natural resources.
- c)research of new species.
- d)consumption of natural resources.
Correct answer is option 'D'. Can you explain this answer?
Growth in human population has increased the rate of
a)
death per year.
b)
conservation of natural resources.
c)
research of new species.
d)
consumption of natural resources.
|
|
Prasenjit Rane answered |
Since the last few decades, growth in human population has increased the rate of consumption of natural resources. It has accelerated the loss of species and habitation in different parts of the world.
The current of Indian Ocean is- a)the west wind drift.
- b)Labrador.
- c)California.
- d)Kuroshio.
Correct answer is option 'A'. Can you explain this answer?
The current of Indian Ocean is
a)
the west wind drift.
b)
Labrador.
c)
California.
d)
Kuroshio.
|
Kavya Khanna answered |
The current of Indian Ocean is the west wind drift.Its a cold current,which bring cold water into warm water areas.
The expansion of the salt depends on- a)temperature.
- b)hails.
- c)atmospheric pressure.
- d)winds.
Correct answer is option 'A'. Can you explain this answer?
The expansion of the salt depends on
a)
temperature.
b)
hails.
c)
atmospheric pressure.
d)
winds.
|
|
Kabir Verma answered |
Salt expansion normally takes place in arid climates as strong heating causes strong evaporation; leading to its expansion. It is known as salt weathering.
The earth radiates energy to the atmosphere in:- a)Long wavelengths
- b)Radiation
- c)Insolation
- d)Short wavelengths
Correct answer is option 'A'. Can you explain this answer?
The earth radiates energy to the atmosphere in:
a)
Long wavelengths
b)
Radiation
c)
Insolation
d)
Short wavelengths
|
Anshul Singh answered |
This energy heats up the atmosphere from below.
Horizontal distribution of pressure is studied by drawing- a)isotherms.
- b)isobars.
- c)isoheights.
- d)isochrones.
Correct answer is option 'B'. Can you explain this answer?
Horizontal distribution of pressure is studied by drawing
a)
isotherms.
b)
isobars.
c)
isoheights.
d)
isochrones.
|
|
Kavya Khanna answered |
Isobars are lines connecting places having equal pressure.
National parks and sanctuaries are established for the purpose of- a)hunting.
- b)conservation.
- c)recreation.
- d)pets.
Correct answer is option 'B'. Can you explain this answer?
National parks and sanctuaries are established for the purpose of
a)
hunting.
b)
conservation.
c)
recreation.
d)
pets.
|
Mira Gupta answered |
National parks and sanctuaries are established for the purpose of conservation.
When the water containing air becomes saturated, then- a)it will be calm.
- b)it will be windy above sea and rainy above land.
- c)it will start to rain.
- d)clouds will be formed.
Correct answer is option 'D'. Can you explain this answer?
When the water containing air becomes saturated, then
a)
it will be calm.
b)
it will be windy above sea and rainy above land.
c)
it will start to rain.
d)
clouds will be formed.
|
|
Kajal Singh answered |
The air becomes saturated when the capacity of containing moisture is full. At this point, air becomes incapable of holding any moisture. Condensation occurs and water vapour becomes liquid in the form of clouds.
The current of Atlantic ocean is- a)west wind drift.
- b)Gulf stream.
- c)Equatorial counter current.
- d)Alaska current.
Correct answer is option 'B'. Can you explain this answer?
The current of Atlantic ocean is
a)
west wind drift.
b)
Gulf stream.
c)
Equatorial counter current.
d)
Alaska current.
|
Priyanka Chavan answered |
The current of Atlantic ocean is Gulf current.It is warm current which bring warm water into cold water areas.
A tectonic plate is a slab of- a)molten rock.
- b)hot rock.
- c)solid rock.
- d)small rocks.
Correct answer is option 'C'. Can you explain this answer?
A tectonic plate is a slab of
a)
molten rock.
b)
hot rock.
c)
solid rock.
d)
small rocks.
|
|
Suyash Saha answered |
A tectonic plate (also called lithospheric plate) is a massive, irregularly-shaped slab of solid rock, generally composed of both continental and oceanic lithosphere.
The GHG that results from the intestinal gases of ruminants (cows) is- a)Nitrous oxide
- b)Carbon dioxide
- c)Carbon monoxide
- d)Methane
Correct answer is option 'D'. Can you explain this answer?
The GHG that results from the intestinal gases of ruminants (cows) is
a)
Nitrous oxide
b)
Carbon dioxide
c)
Carbon monoxide
d)
Methane
|
Upasana Chopra answered |
Methane was discovered and isolated by Alessandro Volta between 1776 and 1778 when studying marsh gas from Lake Maggiore. Methane is a relatively potent greenhouse gas. Compared with carbon dioxide, it has a high global warming potential of 72 (calculated over a period of 20 years) or 25 (for a time period of 100 years). Methane also affects the degradation of the ozone layer.
The alto clouds are found at- a)high levels.
- b)mid levels.
- c)low levels.
- d)low, mid and high levels.
Correct answer is option 'B'. Can you explain this answer?
The alto clouds are found at
a)
high levels.
b)
mid levels.
c)
low levels.
d)
low, mid and high levels.
|
|
Sarthak Joshi answered |
Mid level clouds are called altostratus and altocumulus. The prefix “alto” indicates that they have cloud bases between 2 and 6 km above the ground.
Earth absorbs more
- a)humidity.
- b)heat.
- c)gases.
- d)water vapour.
Correct answer is option 'B'. Can you explain this answer?
Earth absorbs more
a)
humidity.
b)
heat.
c)
gases.
d)
water vapour.
|
|
Chhavi Tripathi answered |
The Earth is absorbing more energy ( heat ) from the Sun than it is emitting to space..... I hope you got your answer...
The minerals that do not contain metal contend are known as- a)precious minerals.
- b)ferrous minerals.
- c)non-metallic minerals.
- d)non-ferrous minerals.
Correct answer is option 'C'. Can you explain this answer?
The minerals that do not contain metal contend are known as
a)
precious minerals.
b)
ferrous minerals.
c)
non-metallic minerals.
d)
non-ferrous minerals.
|
Krish Chaudhary answered |
The minerals that do not contain metal contend are known as non-metallic minerals. Sulphur, phosphates and nitrates are examples of non-metallic minerals.
Compared to other slopes in the northern hemisphere which is the warmest?- a)East facing
- b)South facing
- c)North facing
- d)West facing
Correct answer is option 'B'. Can you explain this answer?
Compared to other slopes in the northern hemisphere which is the warmest?
a)
East facing
b)
South facing
c)
North facing
d)
West facing
|
EduRev Humanities answered |
In the northern hemisphere, south-facing slopes are warmest because the sun stays mostly in the southern half of the sky.
Which of the following statements regarding the evolution of the Earth's atmosphere and oceans is/are correct?i. The early atmosphere was primarily composed of hydrogen and helium, which were largely stripped away by solar winds.ii. Photosynthesis by early life forms significantly decreased the levels of oxygen in the atmosphere.iii. Continuous volcanic eruptions contributed to the addition of gases and water vapor to the atmosphere.iv. The Earth's oceans formed within 500 million years of its formation, primarily through the condensation of water vapor.- a) i and ii
- b) i and iii
- c) ii and iv
- d) i, iii, and iv
Correct answer is option 'D'. Can you explain this answer?
Which of the following statements regarding the evolution of the Earth's atmosphere and oceans is/are correct?
i. The early atmosphere was primarily composed of hydrogen and helium, which were largely stripped away by solar winds.
ii. Photosynthesis by early life forms significantly decreased the levels of oxygen in the atmosphere.
iii. Continuous volcanic eruptions contributed to the addition of gases and water vapor to the atmosphere.
iv. The Earth's oceans formed within 500 million years of its formation, primarily through the condensation of water vapor.
a)
i and ii
b)
i and iii
c)
ii and iv
d)
i, iii, and iv
|
|
Pj Commerce Academy answered |
- Statement i is correct as the initial atmosphere was indeed primarily hydrogen and helium, which were stripped away by solar winds.
- Statement ii is incorrect; photosynthesis actually increased the levels of oxygen in the atmosphere, not decreased it.
- Statement iii is correct; volcanic eruptions contributed significantly to the composition of the atmosphere by releasing water vapor and gases.
- Statement iv is correct; the oceans did form as water vapor condensed and collected in depressions on the Earth's surface within 500 million years.
Thus, the correct answer is Option D: i, iii, and iv.
Which of the following connects the continental shelf and the ocean basins?- a)Deep sea plains
- b)Continental slope
- c)Mid oceanic ridges
- d)None of these
Correct answer is option 'B'. Can you explain this answer?
Which of the following connects the continental shelf and the ocean basins?
a)
Deep sea plains
b)
Continental slope
c)
Mid oceanic ridges
d)
None of these
|
Learning Educators answered |
Continental Slope
- The continental slope connects the continental shelf and the ocean basins. Hence, the correct answer is Continental slope.
- It begins where the bottom of the continental shelf sharply drops off into a steep slope.
- The gradient of the slope region varies between 2-5°.
- The depth of the slope region varies between 200 and 3,000 m.
Polar climates are denoted by- a)P.
- b)E.
- c)F.
- d)G.
Correct answer is option 'B'. Can you explain this answer?
Polar climates are denoted by
a)
P.
b)
E.
c)
F.
d)
G.
|
|
Roshni Patel answered |
Polar climates exist poleward beyond 70° latitude. Polar climates consist of two types: (i) Tundra (ET); (ii) Ice Cap (EF).
Which one of the following helps in aerating the soil.- a)Micro fauna
- b)Meso fauna
- c)Macro fauna
- d)All of the above
Correct answer is option 'B'. Can you explain this answer?
Which one of the following helps in aerating the soil.
a)
Micro fauna
b)
Meso fauna
c)
Macro fauna
d)
All of the above
|
|
Mansi Banerjee answered |
Aerating the Soil with Meso Fauna
Soil aeration is a crucial aspect of maintaining a healthy soil ecosystem. It involves the movement of air into the soil, which helps to support the growth of plant roots and the activity of soil microorganisms. One of the key factors that contribute to soil aeration is the presence of meso fauna.
Definition of Meso Fauna
Meso fauna refers to the group of animals that are intermediate in size between micro and macro fauna. They are typically less than 2 mm in size and include organisms such as mites, springtails, and nematodes.
How Meso Fauna Helps in Aerating Soil
Meso fauna plays an important role in soil aeration through a number of mechanisms:
1. Burrowing: Many meso fauna organisms burrow into the soil, creating pathways for air and water to move through. This helps to increase soil porosity and improve soil structure.
2. Feeding activity: Meso fauna organisms also contribute to soil aeration through their feeding activity. Many organisms feed on organic matter and other soil particles, which helps to break up soil aggregates and increase soil permeability.
3. Nutrient cycling: Meso fauna organisms help to facilitate nutrient cycling in the soil. By breaking down organic matter and other soil particles, they release nutrients that can be taken up by plant roots. This, in turn, supports plant growth and contributes to soil health.
Conclusion
In conclusion, meso fauna plays a crucial role in soil aeration. By burrowing into the soil, feeding on organic matter, and facilitating nutrient cycling, these organisms help to create a healthy soil ecosystem that supports plant growth and other soil organisms.
Soil aeration is a crucial aspect of maintaining a healthy soil ecosystem. It involves the movement of air into the soil, which helps to support the growth of plant roots and the activity of soil microorganisms. One of the key factors that contribute to soil aeration is the presence of meso fauna.
Definition of Meso Fauna
Meso fauna refers to the group of animals that are intermediate in size between micro and macro fauna. They are typically less than 2 mm in size and include organisms such as mites, springtails, and nematodes.
How Meso Fauna Helps in Aerating Soil
Meso fauna plays an important role in soil aeration through a number of mechanisms:
1. Burrowing: Many meso fauna organisms burrow into the soil, creating pathways for air and water to move through. This helps to increase soil porosity and improve soil structure.
2. Feeding activity: Meso fauna organisms also contribute to soil aeration through their feeding activity. Many organisms feed on organic matter and other soil particles, which helps to break up soil aggregates and increase soil permeability.
3. Nutrient cycling: Meso fauna organisms help to facilitate nutrient cycling in the soil. By breaking down organic matter and other soil particles, they release nutrients that can be taken up by plant roots. This, in turn, supports plant growth and contributes to soil health.
Conclusion
In conclusion, meso fauna plays a crucial role in soil aeration. By burrowing into the soil, feeding on organic matter, and facilitating nutrient cycling, these organisms help to create a healthy soil ecosystem that supports plant growth and other soil organisms.
With reference to the Tropical Savannah Region, consider the following statements:1. It is found to the north and south of tropical rainforest biomes.2. The largest expanses of savanna are in Africa, where much of the central part of the continent, for example, Kenya and Tanzania, consists of tropical grassland.3. Savanna grasslands can not be found in Brazil in South America.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?
With reference to the Tropical Savannah Region, consider the following statements:
1. It is found to the north and south of tropical rainforest biomes.
2. The largest expanses of savanna are in Africa, where much of the central part of the continent, for example, Kenya and Tanzania, consists of tropical grassland.
3. Savanna grasslands can not be found in Brazil in South America.
How many of the statements given above are correct?
a)
Only one
b)
Only two
c)
All three
d)
None
|
|
Mainak Goyal answered |
Analysis of the Statements
The question evaluates three statements regarding the Tropical Savannah Region. Let's analyze them one by one.
Statement 1: It is found to the north and south of tropical rainforest biomes.
- This statement is correct. The Tropical Savannah is usually located at latitudes slightly above and below the equatorial regions where tropical rainforests are found. It typically lies at the edges of these rainforests.
Statement 2: The largest expanses of savanna are in Africa, where much of the central part of the continent, for example, Kenya and Tanzania, consists of tropical grassland.
- This statement is also correct. Africa is indeed home to some of the largest savanna regions, such as the Serengeti in Tanzania and the Maasai Mara in Kenya. These areas are characterized by extensive grasslands and scattered trees.
Statement 3: Savanna grasslands cannot be found in Brazil in South America.
- This statement is incorrect. While the most prominent savanna regions are in Africa, savanna grasslands can also be found in Brazil, particularly in the Cerrado region. The Cerrado is characterized by a mix of grasslands and sparse trees, fitting the savanna biome description.
Conclusion
- Therefore, two out of the three statements are correct. This leads to the conclusion that the correct answer is option 'B', as only Statements 1 and 2 are accurate.
The question evaluates three statements regarding the Tropical Savannah Region. Let's analyze them one by one.
Statement 1: It is found to the north and south of tropical rainforest biomes.
- This statement is correct. The Tropical Savannah is usually located at latitudes slightly above and below the equatorial regions where tropical rainforests are found. It typically lies at the edges of these rainforests.
Statement 2: The largest expanses of savanna are in Africa, where much of the central part of the continent, for example, Kenya and Tanzania, consists of tropical grassland.
- This statement is also correct. Africa is indeed home to some of the largest savanna regions, such as the Serengeti in Tanzania and the Maasai Mara in Kenya. These areas are characterized by extensive grasslands and scattered trees.
Statement 3: Savanna grasslands cannot be found in Brazil in South America.
- This statement is incorrect. While the most prominent savanna regions are in Africa, savanna grasslands can also be found in Brazil, particularly in the Cerrado region. The Cerrado is characterized by a mix of grasslands and sparse trees, fitting the savanna biome description.
Conclusion
- Therefore, two out of the three statements are correct. This leads to the conclusion that the correct answer is option 'B', as only Statements 1 and 2 are accurate.
Wave amplitude is:- a)The height of the wave
- b)The breadth of the wave
- c)Half of the wave height
- d)It is the time interval between two successive waves
Correct answer is option 'C'. Can you explain this answer?
Wave amplitude is:
a)
The height of the wave
b)
The breadth of the wave
c)
Half of the wave height
d)
It is the time interval between two successive waves
|
Bhavana Yadav answered |
A. The height of the wave
Wave amplitude refers to the maximum displacement of a particle on a wave from its equilibrium position. It is commonly represented by the height of the wave. It can be measured from either the equilibrium position to the crest (highest point) or from the equilibrium position to the trough (lowest point) of the wave.
B. The breadth of the wave
The breadth of a wave is not related to wave amplitude. The breadth of a wave refers to its width or the distance between two consecutive crests or troughs. It is a measure of the spatial extent of the wave, while amplitude is a measure of the magnitude of the wave.
C. Half of the wave height
Wave amplitude is not half of the wave height. The wave height refers to the vertical distance between the trough and the crest of the wave, while amplitude refers to the maximum displacement from the equilibrium position. The amplitude can be equal to, smaller than, or greater than half of the wave height, depending on the characteristics of the wave.
D. It is the time interval between two successive waves
Wave amplitude is not related to the time interval between two successive waves. The time interval between two successive waves is called the period or wavelength of the wave. Amplitude and wavelength are independent properties of a wave.
In conclusion, the correct answer is option A) The height of the wave. Wave amplitude is the maximum displacement of a particle on a wave from its equilibrium position, commonly represented by the height of the wave. It is not related to the breadth of the wave, half of the wave height, or the time interval between two successive waves.
Wave amplitude refers to the maximum displacement of a particle on a wave from its equilibrium position. It is commonly represented by the height of the wave. It can be measured from either the equilibrium position to the crest (highest point) or from the equilibrium position to the trough (lowest point) of the wave.
B. The breadth of the wave
The breadth of a wave is not related to wave amplitude. The breadth of a wave refers to its width or the distance between two consecutive crests or troughs. It is a measure of the spatial extent of the wave, while amplitude is a measure of the magnitude of the wave.
C. Half of the wave height
Wave amplitude is not half of the wave height. The wave height refers to the vertical distance between the trough and the crest of the wave, while amplitude refers to the maximum displacement from the equilibrium position. The amplitude can be equal to, smaller than, or greater than half of the wave height, depending on the characteristics of the wave.
D. It is the time interval between two successive waves
Wave amplitude is not related to the time interval between two successive waves. The time interval between two successive waves is called the period or wavelength of the wave. Amplitude and wavelength are independent properties of a wave.
In conclusion, the correct answer is option A) The height of the wave. Wave amplitude is the maximum displacement of a particle on a wave from its equilibrium position, commonly represented by the height of the wave. It is not related to the breadth of the wave, half of the wave height, or the time interval between two successive waves.
In which of the following periods earth’s climate was not warm?- a)Cambrian
- b)Ordovician
- c)Silurian
- d)Hercynian
Correct answer is option 'D'. Can you explain this answer?
In which of the following periods earth’s climate was not warm?
a)
Cambrian
b)
Ordovician
c)
Silurian
d)
Hercynian
|
|
Lekshmi Chakraborty answered |
Hercynian denoting a prolonged mountain-forming period in western Europe, eastern North America, and the Andes in the Upper Palaeozoic era, especially the Carboniferous and Permian periods.
Consider the following pairs related to geomorphic features formed by running water:1. Peneplain : A nearly level plain formed by wind erosion.2. Gorge : A deep valley with steep sides, often formed by a river.3. Plunge Pool : A deep hole at the base of a waterfall formed by the impact of water.4. Canyon : A narrow valley with steep, step-like sides, wider at the top than at the bottom.How many pairs given above are correctly matched?- a)Only one pair
- b)Only two pairs
- c)Only three pairs
- d)All four pairs
Correct answer is option 'C'. Can you explain this answer?
Consider the following pairs related to geomorphic features formed by running water:
1. Peneplain : A nearly level plain formed by wind erosion.
2. Gorge : A deep valley with steep sides, often formed by a river.
3. Plunge Pool : A deep hole at the base of a waterfall formed by the impact of water.
4. Canyon : A narrow valley with steep, step-like sides, wider at the top than at the bottom.
How many pairs given above are correctly matched?
a)
Only one pair
b)
Only two pairs
c)
Only three pairs
d)
All four pairs
|
|
Upasana Chopra answered |
Explanation:
1. Peneplain
A peneplain is a nearly level plain that has been worn down by erosion. However, it is not formed by wind erosion but rather by the action of running water over a long period of time.
2. Gorge
A gorge is indeed a deep valley with steep sides, often formed by a river. The flowing water erodes the land, creating a narrow and deep valley over time.
3. Plunge Pool
A plunge pool is a deep hole at the base of a waterfall formed by the impact of water. As the water falls from a height, it erodes the rock below, creating a deep pool at the base of the waterfall.
4. Canyon
A canyon is a narrow valley with steep, step-like sides, wider at the top than at the bottom. Canyons are typically formed by the erosion of rivers cutting through rock over millions of years.
Therefore, out of the given pairs, three of them are correctly matched: Gorge, Plunge Pool, and Canyon. The only incorrect pair is Peneplain, as it is not formed by wind erosion but by the action of running water.
1. Peneplain
A peneplain is a nearly level plain that has been worn down by erosion. However, it is not formed by wind erosion but rather by the action of running water over a long period of time.
2. Gorge
A gorge is indeed a deep valley with steep sides, often formed by a river. The flowing water erodes the land, creating a narrow and deep valley over time.
3. Plunge Pool
A plunge pool is a deep hole at the base of a waterfall formed by the impact of water. As the water falls from a height, it erodes the rock below, creating a deep pool at the base of the waterfall.
4. Canyon
A canyon is a narrow valley with steep, step-like sides, wider at the top than at the bottom. Canyons are typically formed by the erosion of rivers cutting through rock over millions of years.
Therefore, out of the given pairs, three of them are correctly matched: Gorge, Plunge Pool, and Canyon. The only incorrect pair is Peneplain, as it is not formed by wind erosion but by the action of running water.
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