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