Question

Q. Consider the following statements

1. The transfer of heat through vertical movement of air is called advection
2. Horizontal movement of the air is relatively more important than the vertical movement for the heating and cooling of the atmosphere.
3. Seasonal local wind ‘loo’ is the outcome of the advection process.

Which of the above statement/s is/are correct?

• A.
  3 only
• B.
  1 only
• C.
  1 and 2 only
• D.
  2 and 3 only

Answer 1

The correct option is D

2 and 3 only
Explanation:

Statement 1 in incorrect : The transfer of heat through horizontal movement of air is called advection

Statement 2 is correct : Horizontal movement of the air is relatively more important than the vertical movement for the heating and cooling of the atmosphere.

Statement 3 is correct : In northern India, during summer season local winds called ‘loo’ is the outcome of advection process.

Extra Information

The air in contact with the land gets heated slowly and the upper layers in contact with the lower layers also get heated. This process is called conduction. Convection is the process of vertical heating of the atmosphere. In middle latitudes, most of the diurnal variation in daily weather are caused by convection alone.