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