Question

Which of the following is an example of radiation?

a. A metal spoon becomes warm after being set in a pot of boiling water.
b. Warm water rises because it is less dense than cool water.
c. Pancake batter cooks quickly after being spooned onto a hot griddle.
d. Our atmosphere is constantly being heated by the sun.

Answer 1

D. Our atmosphere is constantly being heated by the sun.

Answer 2

d. Our atmosphere is constantly being heated by the sun

Radiation is heat transfer through empty space.