A wave is a rhythmic disturbances that transfer

A wave is a rhythmic disturbances that transfer energy through matter or space.

What are the characteristics of a sound wave?

Fact #1 Sound waves are compressional or longitudinal waves.

Fact #2 Sound originates from vibrating objects.

Fact #3 The vibrating objects transfer this sound energy by direct contact with other matter (usually air).

Fact #4 Sound waves are classified as mechanical waves and they require a medium to transfer the energy.

Fact #5 Loudness or volume is determined by the amplitude of the sound wave.

Fact #6 The energy disturbance travels in concentric waves.

Fact #7 After the sound wave travels through the medium, the medium remains unchanged.

Sound waves travel by one particle hitting another. The closer the particles are together, the easier and quicker the energy can be passed.

Fact #8 That means sound travels best in solids, next best in liquids, and the slowest in gases.

The SPEED of Sound Waves Depends on… A. Type of medium B. Temperature of the medium

Type of medium: *Liquids and solids transmit sound waves better than gases *The particles are closer together in liquids and solids making the transmission of energy easier

Temperature of medium: *Higher temperature -- faster speed *Sound will travel slower in cold air on a winter’s day than it will travel in the warm air of a summer’s day

Can you explain why the flash of a firework is seen before the sound of the firecracker explosion?

Sound travels slower than light: *Sound travels at 344 m/s through air at 20 0 C * Light travels at 300, 000 m/s

1. You are to move from one station to the next 2. Complete the task noted on the station cards 3. Record your observations in your journal for each station LAB GRADE