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