Question

The atmosphere receives its heat in the form of radiation from

Answer 1

[more on electromagnetic radiation] It is infrared radiation that produce the warm feeling on our bodies. Most of the solar radiation is absorbed by the atmosphere and much of what reaches the earth's surface is radiated back into the atmosphere to become heat energy.

Answer is from google.

Answer 2

I would assume the atmosphere recieves its heat from the sun. It just makes the most sense.