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