Symphony Workshop - October 8, 2015
Links to activities available here http://www.exo.net/~pauld/workshops/SymphonyWorkshop2015.html
Pluck a Ruler: Sound is produced by vibrations. A ruler overhanging the edge of a table shows how the pitch of the sound depends on the length of the overhang. Longer overhangs lead to lower pitches.
Head Harp: Wrap a string around your head and pluck the string. Notice how the pitch depends on the length of the string and the tension in the string. Higher tension leads to higher pitches.
Straw Oboe: Cut the end of a straw to make two vibrating reeds then blow through the straw to make the reeds vibrate. You can shorten the straw to increase the pitch of the sound it makes.
Falling Dominoes: When a line of dominoes falls down one after the other, no domino moves from one end of the line to the other, only the motion of the falling dominoes moves, the same holds true for sound. Another version Falling dominoes 2.
Vocal Visualizer Bounce a laser off a small mirror glued to a balloon http://www.exo.net/~emuller/activities/Vocal%20visualizer.pdf
Palm Pipes Strike PVC pipes with your hand and norice the pitch http://www.exo.net/~donr/activities/Palm_Pipes_Plus_Tunes.pdf
Spaghetti Resonance Place a marshmallow on a length of spaghetti and find reresonance https://www.youtube.com/watch?v=ZElNf2GyH9Q
Head Scratchers Vibrate a head scratcher and look for resonance https://drive.google.com/folderview?id=0B0A3iBes6YUUNUdRZFo1MnZqWWM&usp=sharing
Resonance Tubes Drive a tube with a tuning fork https://drive.google.com/folderview?id=0B0A3iBes6YUUVWpVZjJLYUY1QVk&usp=sharing
Music Box Place a music box on different surfaces and listen for how it sounds. https://drive.google.com/file/d/0B0A3iBes6YUUMk1zb0NZbkdJVzg/view?usp=sharing