Science Projects for Kids: Producing Sounds

Sound Barriers

You don't need to be a super hero to stop sound. This sound barriers science project for kids shows how easy it is to halt sound waves in their tracks.

What You'll Need:

  • A friend

Step 1: Go into your backyard and stand about as far from your partner as your house is wide. (That should be about 30 feet or so.) Try to talk to one another.

As long as there is nothing between you and your partner, you should be able to hear one another fairly well, though you may have to raise your voice a little.

Step 2: Now stand on one side of a house while your partner stands on the other side. Try to shout something to your partner and see if you can be heard clearly. Have your partner shout something at you.

You may have heard something, but perhaps you could not make out what your partner was saying. Was the sound weak and distorted?

Try the same experiment with a wall between you and your partner. Try it with a fence, a window, a blanket, and other types of barriers. Does the thickness of the barrier matter?

For more science projects for kids, check out:

Contributing Writers: Sound Barriers by Maria Birmingham, Karen E. Bledsoe, and Kelly Milner Halls