Question

Which diagram best illustrates what happens when electromagnetic waves strike a rough, dark material?

Answer 1

Hi!

Its the 4th one..

Answer 2

the third one among the 4 small squares. the diagram shows the reflection of the electromagnetic waves. reflection is the bouncing back of light after it has hit dark and a rough material. the light, comes all the way from the source, hit the dark and rough material and then bounces back. the light contains the electromagnetic waves. the electromagnetic waves are the ones that behave by striking the  material and then bouncing back.