Sound Grade 8

sound is produced by ...

Vibration is movement that ....

• Only back and forth one time

• Back and forth periodically

• Not back and forth but it continue to move

Seeing lightning and hearing thunder prove that ....

• Light is faster than the sound

• Sound is faster than the light

• Light is slower than the sound

• Sound and light have the same speed

Sound travel fastes in ...

• Solid

• Liquid

• Gas

Can sound travel in vacuum? Why?

• It can travel in vacuum, because no particles are in vacuum

• It can not travel in vacuum, because no particles are in vacuum

• It can not travel in vacuum, because there are only air particles in the vacuum

• It can travel in vacuum, because there are only air particles in the vacuum

What is a rarefaction?

• A part of sound that has lowest pressure

• A part of sound that has highest pressure

• A part of sound that has most number of particles

Which one is a compression?

• A

• B

• C

• D

Sound is a ...

• Longitudinal wave

• Transverse wave

• Electromagnetic Wave

Which one is NOT an example of transverse wave?

• Sound

• Light

• Rope wave

• Water wave

Which one is an amplitude?

• A

• B

• C

• D