Sound Reveiw

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

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 causes an echo?

• sound waves bouncing off large, hard surfaces
• sound waves bouncing off carpet
• sound waves bouncing off tables and chairs
• you repeating yourself

Without matter, sound waves could not travel.

• True
• False

People cannot here sounds with a frequency lees than ______ Hz.

• 2000
• 200
• 20
• 40

_____ is a method of locating things underwater using echolocation.

• trees
• solar
• sonar
• turpentine

Bats use ________ TO LOCATE MOSQUITOES IN THE AIR.

• solar
• ecology
• echolocation
• evolution

The amount of energy a wave carries corresponds with its ____.

• crest
• wavelength
• amplitude
• period