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