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