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