Nature Of Sound

Sound is a disturbance that travels through a mediumLongitudinal waves

Sound waves begin with a vibration Vibrations disturb nearby air particles This moving of particles causes

compressions and rarefactionsPage 37

Write down three examples

Travels through the medium without moving the medium

The disturbances travel through the particles

When disturbances reach your ears, you hear sound

The medium can be…Air, solids, and liquids

When sound reflects of an object it is called an echo

The harder and smoother, the more echo

Sound diffracts through openings Can diffract or bend around corners

Sound can meet and interact with each otherDestructive and constructive

Depends on…Elasticity, density, and temperature of

medium

The ability of a material to bounce back after a disturbance

Amount of matter or mass in a given space

Sound travels more slowly in low temps Why? Particles move slower in cold temps