Listening to Sounds Lab

Purpose:
To determine a way to amplify sound traveling to your ear.

Procedure:
1. Tie 2 strings to the handle of a metal spoon. Each string should be about 40 cm long.
2. Hold one end of each string in each hand. Bump the bowl of the spoon against a desk or other hard, solid object. Listen to the sound.
3. Now wrap the ends of the string around your fingers.
4. Put your index fingers up against your ears and bump the spoon against the object again.

Conclusion:

1. How does the first sound compare with the sound you heard with your fingers up against your ears? The vibration was stronger and it sounded louder and deeper on the second sound test than with the first one.

2. How did the sound travel to your ears when you had the string touching your ears? The vibration traveled through the string.

3. Why do you think it was easier to hear the sound when you put the strings by your ears? Because we were tightening the strings making it denser.