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