Superheroes battle (quiz no.2)

All materials are good at muffling sound

• True

• False

We install silencers to cars, trucks and motorcyles to muffle the sound from the engines

• True

• False

Which one make high-pitched sound?

• 
• 
• 
• 

Which one makes low-pitched sound?

• 
• 
• 
• 

What’s this?

• matchbox

• guitar pegs

• cello

• thick string

The sound of jackhammer is not loud.

• True

• False

Fill in the blank:

We can ...... sounds that we don't want to hear.

• muffle

• turn on

• choose

• make

Fill in the blank

In buildings we use carpets or curtains to ………. noise.

• make

• stop

• create

• tighten

Sometimes the spaces between walls are filled with materials that let noise through.

• True

• False

Some materials can muffle sound well.

• True

• False