___1.)Which is true about sound energy?
A.It is produced by Electromagnetic Waves
B.it is produced by the vibration of matter
C.It is produced by moving electrons
D.It is produced when free electrons
2.)It is a substance through which a vibration travel?
A.Vacum B.space C.medium
D.light
3.)these are made by Vibration,or the fast back and forth movement of something.
A.ocean waves B.sound waves
C.electrical waves D.light waves
4.)what is a quick back and forth movement?
A.vibration B.pitch C.intensity
D.Frequency
5.)it is the term to describe what is heard when sound waves pass through a medium to the ear.
A.light B.heat C.electricity
D.sound
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