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