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