A) the atmosphere B) a material medium C) heat D) a field
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) depends on the source of the waves B) increases as the amount of energy increases C) decreases as the waves spread out D) always remains constant
A) are reflected in many directions B) pass through the water without interacting with it C) convert electromagnetic energy into heat D) are refracted
A) microwaves B) ultraviolet light C) radio waves D) x-rays
A) ultraviolet light B) x-rays C) radio waves D) gamma rays
A) ultraviolet light B) radio waves C) x-rays D) microwaves
A) microwaves B) ultraviolet light C) infrared light D) radio waves
A) microwaves B) visible light C) radio waves D) ultraviolet light
A) ultraviolet light B) radio waves C) x-rays D) microwaves
A) ultraviolet light B) radio waves C) microwaves D) x-rays |