Assertion (A): Variations in pressure cause horizontal movements of air called winds.

Reason (R): Winds transport heat and moisture from one region to another and affect both temperature and humidity.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R does not explain A.
3. A is true but R is false.
4. A is false but R is true.

The decrease in the pressure per unit distance in the direction in which the pressure decreases most rapidly is called.

1. Pressure Gradient
2. Distance Pressure
3. Decreased Pressure
4. Unit/Distance Gradient

Which pressure belt is also called Doldrums?

1. Equatorial Low Pressure Belts
2. Sub-Tropical High Pressure Belts
3. Circum-polar Low Pressure Belts
4. Polar High Pressure Areas

Which amongst the following is NOT a characteristic of Trade Winds?

1. They have varying velocity and are irregular
2. They are permanent or prevailing winds
3. They are called North-East Trades in Northern Hemisphere
4. They have fixed velocity and are regular