Experiment with Spoon Gongs
In this science experiment, kids will explore sound vibrations by making spoon gongs.
When the spoon gong hits something, like a table, it vibrates and makes sound waves. The sound waves then travel straight up the attached strings; if you are holding the strings up to your ears, the clarity of the sound will be amazing! This is very similar to how a tin can phone works, which would be another great experiment to try next.
Tie the handle of the spoon to the center of the string so that when it hangs down, the bowl of the spoon is hanging down toward the floor, below the handle. Swing the spoon back and forth gently until the bowl of the spoon hits something. What happens? You should hear a clinking sound.
Now wrap the ends of the string around each of your index fingers and put your fingers in your ears. Swing the spoon again until it hits something. Now what happens? You will hear a loud, gong-like sound!