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