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Insulating Sound

Students consider how sound is absorbed by materials and when and why we use sound insulation.

'Insulating Sound' worksheet

Key stage:  KS 2

Curriculum topic:  Sound

Curriculum subtopic:  How Sounds Travel

Difficulty level:  

down

Worksheet Overview

QUESTION 1 of 10

Sounds are all around us. We do not want to hear many of the sounds outside when we are inside our homes, for example: traffic noise.


 

Some materials are good at allowing sound to travel through them. They are DENSE MATERIALS.

 

Some materials are good at absorbing sound - they do not vibrate as well. These materials are called SOUND INSULATORS and are SOFT materials. In our homes we are surrounded by soft materials - curtains, carpets, duvets, soft furniture.

 

Sometimes we want to block-out sound because it can DAMAGE our ears!

To allow sounds to travel QUICKLY, materials need to be...

soft

dense

coloured

shiny

Materials which ABSORB sounds are...

liquid

soft

shiny

smooth

Finish this sentence:

 

Sound insulators...........

reduce sound

increase sound

echo

Hard materials which do not absorb sound create... 

a loud noise

a soft noise

an echo

Which THREE of these objects in our homes ABSORB sound? 

walls

carpets

wooden floors

curtains

cushions

 

We wear ear defender because...

we don't like music

loud noise damages our ears

they look good

Which THREE objects INSIDE a car ABSORB the engine noise?

mats

speakers

carpet

exhaust

seats

Aeroplane engines are very loud. INSIDE an aeroplane what helps to muffle the engine sound?

altitude

carpets and seats

videos

Is this statement true or false?

Sound can be measured.

true

false

Sound is measured in which units? 

decimals

decimeters

deciduous

decibels

  • Question 1

To allow sounds to travel QUICKLY, materials need to be...

CORRECT ANSWER
dense
EDDIE SAYS
The PARTICLES in dense materials are closely packed together. This allows the VIBRATIONS to travel through easily.
  • Question 2

Materials which ABSORB sounds are...

CORRECT ANSWER
soft
EDDIE SAYS
Soft materials absorb sound vibrations and make it quieter! Shoosh, I'm trying to sleep...
  • Question 3

Finish this sentence:

 

Sound insulators...........

CORRECT ANSWER
reduce sound
  • Question 4

Hard materials which do not absorb sound create... 

CORRECT ANSWER
an echo
EDDIE SAYS
Hard materials REFLECT sound, making an ECHO, echo...
  • Question 5

Which THREE of these objects in our homes ABSORB sound? 

CORRECT ANSWER
carpets
curtains
cushions
EDDIE SAYS
SOFT materials ABSORB sound. Can you think of any more? Look around your room!
  • Question 6

 

We wear ear defender because...

CORRECT ANSWER
loud noise damages our ears
EDDIE SAYS
Sudden loud noises and loud noises over a long time damages our ears. Ear defenders, or ear plugs STOP the sound waves entering our ears.
  • Question 7

Which THREE objects INSIDE a car ABSORB the engine noise?

CORRECT ANSWER
mats
carpet
seats
EDDIE SAYS
SOFT materials ABSORB sound. Car exhausts are also designed to absorb sound OUTSIDE the car.
  • Question 8

Aeroplane engines are very loud. INSIDE an aeroplane what helps to muffle the engine sound?

CORRECT ANSWER
carpets and seats
EDDIE SAYS
Carpets and seats are soft! SOFT = SOUND ABSORBING.
  • Question 9

Is this statement true or false?

Sound can be measured.

CORRECT ANSWER
true
  • Question 10

Sound is measured in which units? 

CORRECT ANSWER
decibels
EDDIE SAYS
Loud noises, above 85 decibels can damage our ears.
---- OR ----

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