IDEAS/OPTIONS

 

DEMO: plant grass seed in wide shallow pie pan sitting on turntable. Let grow for a few weeks. Geotropism due to movement of growth hormones.

DEMO: salad spinner

DEMO: pennies on turntable.

DEMO: water beaker on turntable takes on parabolic shape. Relate to UA spin-cast mirrors.

PUZZLE: Get-the-bubble-in-the-middle puzzle.

PUZZLE: Get the coin out.

 


 

CONTENT NOT ON NOTES PAGE

SLIDE SHOW: centripetal force

VIDEO: clip from 2001: A Space Odyssey

VIDEO: centrifuge scene from Moonraker

LITERATURE: relate to Ender's Game.

DEMO: Twirl bucket of water in vertical circle.

DEMO: Ball bearing in plastic ring on overhead projector. Then replace with ring with missing quadrant. Which way will the ball roll?

DEMO: swing tennis ball on string. Get student to try pushing me with the string --> strings can only pull. What happens when the string is released?

DEMO: 16' turntable. Feel centrifugal; see coriolis. Relate to mid-latitude cyclones.