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