Question

which of the following are sources of longwave radiation? (select all that apply) a the clouds b the surface c the atmosphere

Explanation:

Longwave radiation (infrared) is emitted by objects with temperatures above absolute zero. The Earth’s surface (B), atmosphere (C, including gases and particles), and clouds (A, which are part of the atmosphere) all emit longwave radiation as they radiate heat.

Answer:

A. the clouds, B. the surface, C. the atmosphere