A) a material medium B) heat C) a field 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) energy that moves as EM waves C) speed of EM waves in a vacuum D) motion of a medium caused by EM waves
A) depends on the source of the waves B) decreases as the waves spread out C) increases as the amount of energy increases 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) x-rays B) radio waves C) microwaves D) ultraviolet light
A) ultraviolet light B) radio waves C) x-rays D) gamma rays
A) radio waves B) x-rays C) microwaves D) ultraviolet light
A) infrared light B) ultraviolet light C) microwaves D) radio waves
A) microwaves B) visible light C) ultraviolet light D) radio waves
A) microwaves B) ultraviolet light C) x-rays D) radio waves
A) x-rays B) radio waves C) microwaves D) ultraviolet light |