The movement of energy through water, sound or light is called what?

The movement of energy through water, sound or light is called what?

• A. Wave
• B. Sound
• C. Light
• D. Particle

Answer: (A)

Energy moves through water, sound, or light in a wave. A wave is a repeating disturbance that carries energy from one place to another, and it can travel through a medium like water or through space, as with light. In water, waves carry energy to shore; in air, sound moves by vibrating air particles; in space, light carries energy without needing a medium. This idea—energy moving as a wave—fits all three examples, so the best term is wave. Sound and light are examples of waves, and a particle isn’t the right description for this way energy moves.

Energy moves through water, sound, or light in a wave. A wave is a repeating disturbance that carries energy from one place to another, and it can travel through a medium like water or through space, as with light. In water, waves carry energy to shore; in air, sound moves by vibrating air particles; in space, light carries energy without needing a medium. This idea—energy moving as a wave—fits all three examples, so the best term is wave. Sound and light are examples of waves, and a particle isn’t the right description for this way energy moves.