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