A) heat B) the atmosphere C) a field D) a material medium
A) artificial lights B) a vacuum C) the energy of distant stars D) the high energy of the Sun
A) conversion of EM waves into kinetic energy B) motion of a medium caused by EM waves C) energy that moves as EM waves D) speed of EM waves in a vacuum
A) depends on the source of the waves B) increases as the amount of energy increases C) decreases as the waves spread out D) always remains constant
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) microwaves C) x-rays D) ultraviolet light
A) ultraviolet light B) gamma rays C) radio waves D) x-rays
A) microwaves B) radio waves C) ultraviolet light D) x-rays
A) microwaves B) radio waves C) infrared light D) ultraviolet light
A) ultraviolet light B) visible light C) radio waves D) microwaves
A) x-rays B) microwaves C) ultraviolet light D) radio waves
A) radio waves B) x-rays C) microwaves D) ultraviolet light |