Review on Sound

Sound waves move outward from their source​ (a)  

• in all directions
• in a straight line
• and moves north

Sound waves travel at _______________ speeds through all kinds of matter.

Sound ​ (a)   spread out as they ​ (b)   farther away from the ​ (c)   of their vibrating

• waves
• move
• source

A rapid back and forth movement is called a _____________.

• echo

• reflection

• vibration

The​ (a)   of sound ​ (b)   on how much force is used to make an object ​ (c)   .

• volume
• depends
• vibrate

Which state of matter does sound travel the fastest through?

• liquid

• solid

• gas

What characteristic of sound depends on how fast the source of sound is vibrating?

​ (a)   is the characteristic of sound that helps us identify different people's voices.​

• Quality
• Pitch
• Volume

Which of the following make up the inner ear?

• Outer flap

• ear drum

• anvil

• cochlea

Which two parts are in the middle ear?

• hammer and anvil

• ear flap and ear canal

• cochlea and auditory nerve