Sound Traveling Investigation
Science project David Golland Feb 16th 2016
What materials can sound travel through?
Sound can travel through some materials but not others. What materials do you think sound can travel through?
1. 2 metal spoons
2. plastic tub full of water
Step 2. Click two metal spoons together in a plastic tub full of water and make sure your partner's ear is 20 cm away from the tub. Could your partner hear the spoons clicking under water? write the result in your table.
Step 3. Stand at one end of a table and make sure your partner has his (her) ear against the table at the other side, then scratch the table with your finger nail very lightly and see if your partner can hear the scratching. Write the result in your table.
Apply and Extend
No, it is not possible to hear in space because sound can only travel through liquid, gasses and solids. Since there are no objects in space that vibrate to create sound waves, we can not hear in space.
Look at the photo below. Do you think a swimmer under water would be able to hear the boat? Why or why not?
Yes, I think so, because the boat is moving fast and the motor under water (liquid) can probably be heard.