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