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Hidden poles
YOU WILL NEED
→ ball magnets
→ bar magnet
→ 2 different-colored
permanent markers
HERE'S HOW
1. Take two balls and let them roll freely on
the table a slight distance apart. They
will quickly click together.
2. Pull them apart again, and mark the
touching point (the point of contact) of
one ball with one color, and that of the
other ball with the other color.
3. Let all of the balls click together in turn,
and make your marks on them.
Important! Whenever you have used one
color to mark one ball, be sure to use the
other color to mark the other ball.
4. Use the bar magnet to test the marked
locations.
What do you notice?
Magnets, Iron, and Poles |
SOUTH
EXPERIMENT 10
1
2
3
4
13
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