CLIMATE

Knowledge/understanding

100

The Indian subcontinent experiences comparatively milder winters as compared to Central Asia due to which of the following factors?
(a) The Tropic of Cancer
(b) The surrounding seas
(c) The Himalayas
(d) Ocean currents

(c) The Himalayas

200

The peninsular part of India experiences peak summers earlier than northern India because :
(a) There is less rainfall in the peninsula during that time.
(b) Cold waves from Central Asia sweeps through the northern plains during the time.
(c) Due to northward movement of the sun, the global heat belt shifts northward
(d) Clouds do not form in those months

(c) Due to northward movement of the sun, the global heat belt shifts northward

300

Assertion (A) : Hot desert regions have high diurnal temperature ranges.
Reason (R ) : There is no cloud cover in the hot desert regions.
A). Both A and R are true and R is the correct explanation of A

B). Both A and R are true but R is not the correct explanation of A

C). A is true but R is false

D). A is false but R is true

 Both A and R are true but R is not the correct explanation of A

400

Assertion (A) : About seventy five percent of the working population of the Aravalli mountain region is engaged in agriculture.
Reason (R ) : The greater parts of Aravallis receive scanty rainfall.
A). Both A and R are true and R is the correct explanation of A

B). Both A and R are true but R is not the correct explanation of A

C). A is true but R is false

D). A is false but R is true

A is false but R is true

500

Read the below statement:

1. La Nina is characterized by unusually cold ocean temperature in equatorial Indian Ocean whereas El Nino is characterized by unusually warm ocean temperature in the equatorial Pacific Ocean.
2. El Nino has adverse effect on south-west monsoon of India, but La Nina has no effect on monsoon climate.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

(d)

HOTS

100

Assertion (A) : Bulk of the rainfall of the Coromandal coast is derived from depressions and cyclones.
Reason (R ) : The low pressure conditions which once prevailed over north-western India get transferred to the centre of Bay of Bengal by early November.
A). Both A and R are true and R is the correct explanation of A

B). Both A and R are true but R is not the correct explanation of A

C). A is true but R is false

D). A is false but R is true

Both A and R are true and R is the correct explanation of A

200

Explain development of Monsoon Trough and its influence over rainfall distribution.

• It is a region of low atmospheric pressure which develops because of excessive heat.
• It brings a remarkable change in rainfall pattern.
• It is responsible for diy and wet spells of monsoon.

300

Give reason for the following:
(i) Thiruvananthapuram has the year equable climate.
(ii) Delhi has extreme climate.
(iii) The Tamil Nadu coast receives winter rainfall.  

(i) It has equable climate due to proximity to sea. Sea has moderating influence over its climate.

(ii) Because Delhi is far away from sea. As the distance from the sea increases,its moderating influence decreases.
(iii) Tamil Nadu receives rainfall from North-east trade winds.

 

400

Why the people of India eagerly awaits the arrival of the monsoon?

It binds the whole country by providing water which sets all agricultural activities in motion. That is why the monsoon is considered a unifying bond.

500

Given below is the climate data – mean monthly temperatures and mean monthly rainfall for stations A, B and C from India. Study the data carefully and answer the following questions:

(i) What is the annual range of temperature in Station A? 

(ii) Name the wettest month in Station A.

The annual range of temperature in Station A (32.5°C — 24.5°C) = 8°C 

November