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