Changing Pitch by Changing Tension
Explore pitch and tension using a pegboard and string.
- Plastic Tray
- Piece of string
- 2 washers
- 1 wing nut
Tie one end of the string to a hole at one end of a pegboard.
Place one washer on the eyebolt and run the eyebolt through a hole at the other
end of the pegboard.
Secure the end of the eyebolt on the underside of the pegboard with another
washer and a wing nut.
Tie the loose end of the string to the eyebolt. Turn the eyebolt to tighten
or loosen the string.
How many pitches can you make?
When you turned the eyebolt, what happened to the string?
What happened to the pitch when you tightened the string?
Do you know anyone who plays a stringed instrument? Ask that person to demonstrate
for you or your class how the strings on the instrument are tuned.