Sound is caused by? p2

• force
• vibrations
• instruments

What is vibration?p2

• 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

Measure of how high or low a sound is_____.p7

• amplitude
• compression
• speed of sound
• pitch

Sound is a form of? p2

• energy
• pitch
• volume

Area of a longitudinal wave where particles are CLOSE together.p2

• Compression
• Rarefaction

The reflection of sound waves off of a hard surface can create ______.p8

• A wave
• An echo 

Soft surfaces _______ sound waves. p8

• Reflect
• Absorb

Wind instruments produce sound when you pull a string. p12 &13

• True
• False

When Dr. Anderson yells his name in a cave, the sound reflects off the walls of the cave and travels back to his ears.  What is this called? p8

• refraction
• amplitude
• pitch
• echo

Pitch  of an object is affected by: p12

• length, thickness, time
• length, thickness, tightness
• thickness, tightness, time