Pitch and Sound Waves

Which changes when the volume of a sound becomes softer?

• the frequency of the sound waves

• the height of the crests and the depths of the troughs

• the speed of the sound waves travel

• the speed the sound waves vibrate

Pitch depends on...

• the size of the crests

• the frequency of the waves

• the size of the troughs

• the energy of the waves

What could you do to change the volume of the sound coming out of a guitar?

• strum harder to make it louder

• strum softer to make it quieter

• all of the above

• none of the above

If you play high and low notes on a piano what property changes?

• pitch

• volume

• speed

• frequency

Which word means sound can get louder or quieter?

• pitch

• volume

• frequency

• distance

Sounds that have more energy have a ______ pitch.

• higher

• lower

A student sets up an investigation with four bottles with four different amounts of water. The students wants to find out how different amounts of water in a bottle affect the pitch. How could the student test this experiment?

• ta the bottles with plastic spoon

• step on the bottles

• pour the liquids out

• tap each bottle with a metal spoon

Which property of a sound depends on the frequency of a sound wave?

• pitch

• volume

• height

• energy