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Invisible
attraction
YOU WILL NEED
→ block magnet
→ ball magnet
→ large sheet of paper
→ thick felt-tip markers
→ heavy cardboard
→ scissors
→ glue stick
→ watch with second hand or
stopwatch
→ heavy book
1
Games with Magnets |
HERE'S HOW
1. Use the felt-tip markers to draw a thick,
winding line with lots of loops on the
paper. Mark a starting point and a finishing
point. Glue the paper to the cardboard.
2. Set the ball magnet on the starting point
and guide it along the curving line toward
the finishing point by moving the block
magnet against the underside of the
cardboard.
Variations
a) Along with a few friends, see who can
navigate the "race track" the fastest.
Deduct points for errors.
b) You can increase the level of difficulty by
increasing the distance between
cardboard and magnet, for example by
using a thick book. That will make it
harder to keep the ball from rolling off in
its own direction.
2
47
EXPERIMENT 32
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