group+two

=group two= SWING LOW, SWEET PENDULUM ====We proved the rotation of the earth!

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For this experiment we use:
 * fine white sand
 * plastic bottle
 * string
 * nail
 * sticky tape
 * funnel
 * large black sheet

PROCEDURE:

You need to make a small hole in the base of the bottle because the sand needs fall from the hole You tie the cord to the screw cap and to the tree branch. The cord can be suspended at 3/4 m. You tie the cord to the screw cap and to the tree branch.The bottle can be suspended at 3/4 m. You need to put a black sheet underneath the bottle. .

= [|our project] =