Question

Consider the following statements:

1. The transfer of heat through horizontal movement of air is called Advection.
2. The shortwave radiation on earth is absorbed by the carbon dioxide and the other greenhouse gases whereas longwave radiation passes through them without any heating.
3. The Earth as a whole does not accumulate or loose heat and its temperature has remained constant.

Select the correct answer using the code given below.

• A. 1
• B. 1 and 2
• C. 1 and 3
• D. none of these

Answer 1

The correct option is C 1 and 3

1. There are different ways of heating and cooling of the atmosphere. The transfer of heat through horizontal movement of air is called Advection. The other modes are Conduction, Convection, Terrestrial Radiation and Green House Gases.
   
2. The longwave radiation is absorbed by the atmospheric gases particularly by carbon dioxide and the other greenhouse gases whereas the atmosphere is transparent to the shortwave solar radiation.
   
3. According to the heat budget concept, the earth as a whole does not accumulate or lose heat. It maintains its temperature. This can happen only if the amount of heat received in the form of Insolation equals the amount lost by the earth through terrestrial radiation.