Sound

Sound is. .

• a vibration
• a wave
• a back and forth motion
• all of the above

__________ is a measure of the loudness of sound waves.

• amplitude
• wavelength
• frequency
• speed

Sound will travel slowest through which of the following forms of matter?

• milk
• desk
• air
• door

Sound travels FASTEST through which of these materials?

• Air
• Empty space
• Metal
• Water

Sound is caused by? 

• force
• vibrations
• instruments

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

Sound is a form of? 

• energy
• pitch
• volume

What do bats and dolphins use to find things? 

• their eyes
• their ears
• echolocation

Measure of how high or low a sound is

• amplitude
• compression
• speed of sound
• pitch

This is the unit used to measure the volume of a sound. 

• Decibel
• Hertz
• Vibration
• Oscilloscope