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