Whats that Sound?
When something Vibrates or shakes very ,very quickly it makes the air around it vibrate too.When these vibrations travel to our ears we hear a Sound. We made a long distant call!Using plastic cups threaded with string we held the cups so that the string was tight.One person whispered into one cup while their partner listened with the other . The s ound of one voice made the string vibrate carrying the sound to the other persons ear. Wow !!-the vibrations made by banging the tray made the air vibrate and the sound was carried to the bowl making the gladwrap vibrate and the rice on the top jump. We have enjoyed mixing colours for our colour wheels.