Sound year 5

What is sound?

• Sound is a type of energy made by vibrations.

• Sound is vibrations.

• sound is a type of energy that makes a noise.

• Sound is just a noise.

Define vibrations.

Can sound travel through vaccum?

• Yes

• No

From which state of matter do the molecules travel the fastest?

• Solid

• Liquid

• Gas

From which state of matter do the air molecules travel the slowest?

• Solid

• Liquid

• Gas

From which state of matter does sound travel through the best?

• Solid

• Liquid

• Gas

Why can't sound travel in space?

What is the source of sound in the picture?

• fireworks

• river

• sky

• land

What unit is used to measure sound?

• dB

• DB

• volume

• pitch

What level of sound will cause immediate damage to the human ear?

• 200 dB

• 140 dB

• 85 dB

•  

  50 dB