Question

Determine the amount of insolation that the earth receives​

Answer 1

the earth receives only a part of this radiated energy (2 units our of 1,00,00,00,000 units of energy radiated by the sun)

Answer 2

The factor that determines the amount of insolation received is the angle of inclination of the rays. This depends on the latitude of a place. The higher the latitude the less is the angle they make with the surface of the earth resulting in slant sun rays.