A) a material medium B) heat C) a field D) the atmosphere
A) a vacuum B) the high energy of the Sun C) the energy of distant stars D) artificial lights
A) conversion of EM waves into kinetic energy B) speed of EM waves in a vacuum C) energy that moves as EM waves D) motion of a medium caused by EM waves
A) increases as the amount of energy increases B) decreases as the waves spread out C) always remains constant D) depends on the source of the waves
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) x-rays B) microwaves C) radio waves D) ultraviolet light
A) radio waves B) gamma rays C) ultraviolet light D) x-rays
A) x-rays B) radio waves C) ultraviolet light D) microwaves
A) radio waves B) microwaves C) ultraviolet light D) infrared light
A) ultraviolet light B) microwaves C) radio waves D) visible light
A) radio waves B) x-rays C) microwaves D) ultraviolet light
A) x-rays B) microwaves C) radio waves D) ultraviolet light |