state two differences between light waves and sound waves
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Light waves are traverse, sinusoidal, and don’t require a medium to travel through. That’s how heat and light reach us from the sun through the vacuum of space.
Sound, on the other hand, is a longitudinal wave. It’s caused by changes in pressure and molecular collisions. This means that sound has to have a medium to travel through, and will be affected by what material it’s being carried by (snap your fingers with your head above and underwater and hear the difference). Although sound travels by displaced molecules, it’s still helpful to model it as a sine wave (like most things in science!)
Sound, on the other hand, is a longitudinal wave. It’s caused by changes in pressure and molecular collisions. This means that sound has to have a medium to travel through, and will be affected by what material it’s being carried by (snap your fingers with your head above and underwater and hear the difference). Although sound travels by displaced molecules, it’s still helpful to model it as a sine wave (like most things in science!)
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