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