String and Spoon Sound Lab

Purpose: to determine a way to amplify sound travelling 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 warp the ends of the strings 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?




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




3. Why do you think it was easier to hear sound when you put the strings by your ears?