Explain the following? 1.Sound can travel through solids. 2.Sound can travel through liquids. 3.Sound can travel through air.
1 Answer
Sound is simply collision of particles happening in a chain reaction resembling a wave front and each of the mentioned materials are made of particles.
Explanation:
A sound is created when something pushes on particles. The most commonplace example is a speaker.
A speaker vibrates back and fourth, pushing and pulling on the air molecules that are in front of it. Those molecules right in front of it, in turn, push on the air molecules further from the speaker. Then those molecules push on more molecules even further away.
This chain reaction continues until the air molecules that are being pushed and pulled are against your ear drum, which itself, then gets pushed an pulled in the same way as the speaker. Your brain then interprets that as sound.
Because sound is simply particles moving against each other in a chain reaction of particles that propagates like a wave, anything made of particles can carry sound. Liquids, solids, and air are all made of particles, and thus, can all carry sound.
Space, however, is a vacuum and contains almost no particles. This is why you can't hear anything in space.
