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Home » Early Years Science » Muffling Sound investigation

Muffling Sound investigation

Modified: Apr 28, 2023 · Published: Apr 28, 2014 by Emma Vanstone · This post may contain affiliate links · 6 Comments

We’ve talked about properties of materials before when we investigated how waterproof materials are or how strong they are, we’ve even organised different objects by the material they’re made from by looking at the properties of those materials.

Today we’re going to explore how some materials are better at absorbing sound than others.

Sound Investigation

You’ll need

A cardboard tube

Bubble wrap, kitchen towel or anything else you think might absorb sound.

long cardboard tube and bubble wrap for a sound investigation

Instructions

Place the tube to the ear of a friend and speak ( not too loudly ) into the tube. Can they hear what you are saying?

Try again, but this time fill the tube with the bubble wrap first and try to speak at the same volume you did before. Can they still hear you?

Do the same thing with all your different materials.

Can you design a table to record your results? Which material muffles the sound the most?

Child with a tube to their ear for a sound experiment

Things to think about

Do you know why you need to speak at the same volume each time?

This is because when we experiment, we usually have one variable ( one condition we change ), and everything else must stay constant to test each variable fairly.

If you wanted to try speaking at different volumes you’d need to keep the material inside the tube constant.

Extension task

Can you use different length tubes?

How else can you block sound? What if you cover your ears with your hands? Is it different with your fingers open and closed?

Great for Key Stage 2 Science

Obtaining and presenting evidence

Recording information

Last Updated on April 28, 2023 by Emma Vanstone

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Safety Notice

Science Sparks ( Wild Sparks Enterprises Ltd ) are not liable for the actions of activity of any person who uses the information in this resource or in any of the suggested further resources. Science Sparks assume no liability with regard to injuries or damage to property that may occur as a result of using the information and carrying out the practical activities contained in this resource or in any of the suggested further resources.

These activities are designed to be carried out by children working with a parent, guardian or other appropriate adult. The adult involved is fully responsible for ensuring that the activities are carried out safely.

Reader Interactions

Comments

  1. Natalie PlanetSmartyPants

    May 08, 2014 at 2:03 pm

    I love experiments when you can vary one variable. Of course, in this case it’s technically two unless you are guaranteed to always use the sound of the same volume, for example, a music playing at the same volume. I am featuring this post at After School Round Up this week.

    Reply
    • Emma Vanstone

      May 08, 2014 at 8:44 pm

      Thanks Natalie 🙂 Music is a great idea.

      Reply
  2. stephanie

    May 12, 2014 at 1:31 am

    Very cool! Thanks for sharing at After School!

    Reply
  3. jake

    November 18, 2016 at 7:36 am

    fuck

    Reply
  4. jake

    November 18, 2016 at 7:37 am

    bich

    Reply
  5. jake

    November 18, 2016 at 7:37 am

    bitch

    Reply

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