A) heat B) the atmosphere C) a material medium D) a field
A) a vacuum B) the high energy of the Sun C) artificial lights D) the energy of distant stars
A) motion of a medium caused by EM waves B) speed of EM waves in a vacuum C) conversion of EM waves into kinetic energy D) energy that moves as EM waves
A) depends on the source of the waves B) increases as the amount of energy increases C) always remains constant D) decreases as the waves spread out
A) are refracted B) pass through the water without interacting with it C) convert electromagnetic energy into heat D) are reflected in many directions
A) microwaves B) x-rays C) radio waves D) ultraviolet light
A) radio waves B) gamma rays C) ultraviolet light D) x-rays
A) microwaves B) ultraviolet light C) radio waves D) x-rays
A) ultraviolet light B) microwaves C) infrared light D) radio waves
A) radio waves B) microwaves C) visible light D) ultraviolet light
A) x-rays B) microwaves C) radio waves D) ultraviolet light
A) x-rays B) microwaves C) ultraviolet light D) radio waves |