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