A) heat B) the atmosphere C) a field D) a material medium
A) artificial lights B) the energy of distant stars C) a vacuum D) the high energy of the Sun
A) energy that moves as EM waves B) motion of a medium caused by EM waves C) speed of EM waves in a vacuum D) conversion of EM waves into kinetic energy
A) always remains constant B) depends on the source of the waves C) decreases as the waves spread out D) increases as the amount of energy increases
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) microwaves B) x-rays C) radio waves D) ultraviolet light
A) radio waves B) ultraviolet light C) gamma rays D) x-rays
A) microwaves B) x-rays C) ultraviolet light D) radio waves
A) radio waves B) ultraviolet light C) microwaves D) infrared light
A) radio waves B) ultraviolet light C) microwaves D) visible light
A) x-rays B) microwaves C) radio waves D) ultraviolet light
A) microwaves B) radio waves C) x-rays D) ultraviolet light |