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