Test: Climate (Term II)- 2

# Test: Climate (Term II)- 2 - Class 9

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Test: Climate (Term II)- 2 - Question 1

### State whether True or False:Temperature is not an atmospheric condition.

Detailed Solution for Test: Climate (Term II)- 2 - Question 1
The dew point is the temperature at which the water vapor in a sample of air at constant barometric pressure condenses into liquid water at the same rate at which it evaporates so dew point is a temperature at which the air becomes saturated.
Test: Climate (Term II)- 2 - Question 2

### State whether True or False:Climate is described as the long-term pattern of weather.

Detailed Solution for Test: Climate (Term II)- 2 - Question 2
Climate is the long-term pattern of weather in a particular area. Weather can change from hour-to-hour, day-to-day, month-to-month or even year-to-year. A region's weather patterns, usually tracked for at least 30 years, are considered its climate. Different parts of the world have different climates.
Test: Climate (Term II)- 2 - Question 3

### State whether True or False:The rainfall decreases from West to East in Northern India.

Detailed Solution for Test: Climate (Term II)- 2 - Question 3
The rainfall decreases from east to west in Northern India because the Bay of Bengal branch of Southwest monsoon moves towards north east carrying more moisture and they give heavy rainfall in this region.
Test: Climate (Term II)- 2 - Question 4

______ is basically a seasonal reversal in the wind throughout the year.

Detailed Solution for Test: Climate (Term II)- 2 - Question 4
The seasonal reversal in wind direction during a year is called monsoon. Monsoon tends to have ‘breaks’ in rainfall; which means that there are wet and dry spells in between. The monsoon rains take place only for a few days at a time and then come the rainless intervals.
Test: Climate (Term II)- 2 - Question 5

India has ______ climatic conditions.

Detailed Solution for Test: Climate (Term II)- 2 - Question 5
India is home to an extraordinary variety of climatic regions, ranging from tropical in the south to temperate and alpine in the Himalayan north, where elevated regions receive sustained winter snowfall. The nation's climate is strongly influenced by the Himalayas and the Thar Desert.
Test: Climate (Term II)- 2 - Question 6

Assertion (A) : ‘Western Disturbances’ disturb the calm and quite weather of North and North– western India by causing cyclonic rains over the plains and snowfall in the mountains.

Reason (R) : Winter rainfall caused by them locally known as ‘Mahawat’ is of immense importance for the cultivation of Rabi crops.

Detailed Solution for Test: Climate (Term II)- 2 - Question 6
They disturb the calm and quiet weather of north and north western India by causing cyclonic rains over the plains and snowfall in the mountains.
Test: Climate (Term II)- 2 - Question 7

These are a narrow belt of high altitude (above 12,000 m) Westerly Winds in the Troposphere. Their speed varies from about 110 km/h in summer to about 184 km/h in winter.

Detailed Solution for Test: Climate (Term II)- 2 - Question 7
Jet streams are a narrow belt of high altitude (above 12,000 m) westerly winds in the troposphere. Their speed varies from about 110 km/h in summer to about 184 km/h in winter. A number of separate jet streams have been identified. The most constant are the mid-latitude and the subtropical jet stream.

Over India, these jet streams blow south of the Himalayas, all through the year except in summer. The western cyclonic disturbances experienced in the north and northwestern parts of the country are brought in by this westerly flow. In summer, the subtropical westerly jet stream moves north of the Himalayas with the apparent movement of the sun. An easterly jet stream, called the tropical easterly jet stream blows over peninsular India, approximately over 14°N during the summer months.

Test: Climate (Term II)- 2 - Question 8

It is an apparent force caused by the earth’s rotation. This force deflects winds towards the right in the Northern Hemisphere and towards the left in the Southern Hemisphere.

Detailed Solution for Test: Climate (Term II)- 2 - Question 8
It is an apparent force caused by the earth’s rotation. The coriolis force is responsible for deflection of winds towards the right in the northern hemisphere and left in the southern hemisphere. It is also known as Ferrel’s law, and is responsible for deflection of the south-east trade winds which enter the Indian peninsula as the south-west monsoon.
Test: Climate (Term II)- 2 - Question 9

Answer the following questions in one word/one sentence:

What is the movement of water in the oceans called?

Detailed Solution for Test: Climate (Term II)- 2 - Question 9
An ocean current is a continuous, directed movement of sea water generated by a number of forces acting upon the water, including wind, the Coriolis effect, breaking waves, cabbeling, and temperature and salinity differences.
Test: Climate (Term II)- 2 - Question 10

Answer the following questions in one word/one sentence:

What are hot-dry winds that blow during the day called?

Detailed Solution for Test: Climate (Term II)- 2 - Question 10
In the hot weather season sun rays more or less directly fall in this region. Temperature becomes very high. Hot and dry winds called loo, blow during the day.

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