Sound energy

What is vibration?

• how loud a sound is
• the back and forth movement of matter
• how high or low a sound is
• the loudness or softness of a sound

What is frequency?

• the number of vibrations per second
• how high or low a sound is
• the loudness or softness of a sound
• the back and forth movement of matter

Measure of how high or low a sound is

• amplitude
• compression
• speed of sound
• pitch

A longer string makes a _______ pitch than a short string.

• louder
• softer
• higher
• lower

Sound is a form of? 

• energy
• pitch
• volume

What type of materials REFLECT sound?

• hard materials
• smooth materials
• both hard and smooth materials
• porous materials

The ___________________ is how loud or soft a sound is. 

• echo
• frequency
• pitch
• volume

In which medium will sound travel slowest?

• air
• water
• glass
• salt water

Which of the following determines the pitch of a sound wave?

• frequency
• density
• mass
• reflection

Why is the school library covered with carpet?

• So everyone can make a lot of noise
• to help absorb sounds to keep it quiet
• because it looks good
• to help absorb sounds so it can stay noisy