Sound

Cut a piece of string 35 cm long. Use a paper cup and punch a small hole in the bottom with a pin or pencil. Thread the string through the hole and pull the string through so that you can tie a knot in one end of the string. You are doing this so the string will not pull back through the hole. Now put the string that is hanging out of the bottom of the cup between two fingers and rub to the end of the string. Listen to this sound as it is amplified by the cup. Next wet the string and notice a totally different sound is made.
 * Squawking Cup**

[|Bonko]

[| Straw Kazoo]

[|Stereo Hangers]

[|Dr. Loopy's Sound Experiments]

[|Dr. Loopy's Light and Sound Part 2]