A) the atmosphere B) a material medium C) heat D) a field
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) 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) convert electromagnetic energy into heat C) are refracted D) pass through the water without interacting with it
A) microwaves B) ultraviolet light C) x-rays D) radio waves
A) x-rays B) radio waves C) ultraviolet light D) gamma rays
A) microwaves B) x-rays C) radio waves D) ultraviolet light
A) radio waves B) infrared light C) ultraviolet light D) microwaves
A) visible light B) radio waves C) ultraviolet light D) microwaves
A) microwaves B) radio waves C) ultraviolet light D) x-rays
A) radio waves B) ultraviolet light C) microwaves D) x-rays |