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