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