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