5.1_Sound, vibrations and energy transfer

Example of detector

• drum

• ear

• air

Example of source

• drum

• ear

• air

Example of medium

• drum

• ear

• air

True or False

Animals such as dolphins and whales

communicate over very large distances

by making and hearing sounds.

• True

• False

What is vacuum

• A space that is full of air

• A space that is empty of air

• A space that is completely empty of everything

  including air

In a sound wave.

Where the air molecules are close together it is called

• compression

• rarefaction

In a sound wave.

Where the air molecules are farther a part it is called

• compression

• rarefaction

Sound waves travel fastest .........

• Solid

• Liquid

• Gas

Sound waves travel slowest .........

• Solid

• Liquid

• Gas

Identify the picture

• transverse wave

• longitudinal wave