Chapter 12: Sound - Part 2

Gia bangs on a drum and makes it vibrate. When she places her hand on the drum, the vibration stops. What happens to the sound of the drum?

• The sound stops due to the vibration stopping.

• The sound stops because sound cannot travel through her hand.

• The sound is clearer because the vibrations have halted.

• The sound becomes a lower pitch due to the vibrations stopping.

Which form of energy is the result of vibrations traveling through the air?

• wind energy

• electrical energy

• solar energy

• sound energy

What is one way to increase the pitch of a sound?

• Make the object vibrate faster.

• Make the object vibrate slower.

• Make the object vibrate louder.

• Make the object vibrate softer.

Jonathan conducted an experiment where he hit a drum. When the drum was struck, salt flew into the air. What is the best reasoning for this?

• Vibrating objects make sound.

• Movement does not require energy.

• Sound can change into wind energy.

• Vibrating objects do not change their pitch or volume.

What will happen if you pluck a guitar string with more force?

• The pitch will get higher.

• The pitch will get lower.

• The volume will get louder.

• The volume will get softer.

Why might a guitar have a higher pitch than a drum?

• The guitar is louder than the drum.

• The drum is louder than the guitar.

• The guitar's strings vibrate, but the drum's parts do not.

• The guitar's strings vibrate more quickly than the drum's parts.

Sound travels faster through

• solids
• liquids
• gas

What is this section of the wave (in the green rectangle) called?

• Rarefaction

• Amplitude

• Compression

• Crest

Here are two rubber bands stretched to different lengths.

A -------------------------------------

B ---------------------

What would you predict about the pitch of the sound of rubber band B compared to rubber band A?

• The pitch of B is higher than the pitch of A.

• The pitch of B is louder than the pitch of A.

• The pitch of B is lower than the pitch of A.

• The pitch of B is softer than the pitch of A.

What is a change in pitch most related to?

• how loud the vibration is

• how soft the vibration is

• how long the vibration continues

• how fast the vibration moves back and forth