atmosphere & climatology section 1 MCQ Questions & Answers Detailed Explanation

Question : 1

Consider the following statements about the ‘Roaring Forties’.

1. They blow uninterrupted in the Northern and Southern Hemispheres.
2. They blow with great strength and constancy.
3. Their direction is generally from North-West to East in the Southern Hemisphere.
4. Overcast skies, rain and raw weather are generally associated with them.

a) 2, 3 and 4

b) 1, 2 and 3

c) 1, 2 and 4

d) 1, 3 and 4

Question : 2

What is stated in terms of grams of water vapour per kilogram of moist air?

a) Relative humidity

b) Specific humidity

c) Absolute humidity

d) Vapour pressure

Question : 3

Air pressure is lowest in

a) Spring season

b) Winter season

c) Summer season

d) Autumn season

Question : 4

Which one of the four regions above the earth has smallest height (km) ?

a) Mesosphere

b) Stratosphere

c) Troposphere

d) Thermosphere

Question : 5

Statement I:
The decrease of air temperature with increasing altitudes in the atmosphere is called the vertical temperature gradient.
Statement II:
In the Troposphere, air temperature decreases with increasing altitude due to radiation from the Earth.
Code:

a) Both the statements are individually true but Statement II is not the correct explanation of Statement I

b) Both the statements are individually true and Statement II is the correct explanation of Statement I

c) Statement I is false but Statement II is true

d) Statement I is true but Statement II is false

Question : 6

What is the most important element of climate ?

a) Temperature

b) Rainfall

c) Humidity

d) Pressure