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