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