Sound

An object that does not vibrate cannot produce

• sound
• light
• heat
• electricity

What would happen if you tighten the strings on a guitar?

• it would make a low pitch sound
• it would make a high pitch sound
• it produces a slow vibrations
• it produces low frequency

What produces sound?

• applying a force to an object
• causing an object to vibrate
• shining light on an object
• heating an object

What happens to the sound an object makes when the speed of vibrations decreases (slow down)?

• its volume will increase
• its pitch rises
• its pitch becomes lower
• its volume decreases

What is volume?

• how high or low a sound is
• the loudness or softness of a sound
• the number of vibrations per second
• vibrations

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

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 pitch?

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

What is one factor that can cause pitch to change?

• size
• the material it is made from
• how many times its hit
• the pitch doesn't change

Complete the sentence with the correct words:
The smaller the object the _____the frequency,  the _____ the pitch.

• lower, higher
• lower, lower
• higher, higher
• higher, lower