The atmosphere of the earth is heated by radiations which are

The atmosphere of the earth is heated by radiations which are mainly

  1. radiated by the sun
  2. re-radiated by land
  3. re-radiated by water
  4. re-radiated by land and water

Answer

When solar radiations fall on the earth, some are absorbed by the land but majority of these are reflected back or re-radiated by land and water bodies. These re-radiated or reflected solar radiation, heat up the atmosphere. This results in convection currents.

The correct option is D.