Using only the material provided, design an experiment that demonstrates the gravity fact.
Gravity Fact: Free hanging objects are pulled down (toward Earth” center). This is true regardless of the angle the of the support the hanging object is attached to.
Materials: 12-inch piece of string, paper clip, pencil
Kids should work in groups, but each child should have his or her own set of materials. Kids can experiment separately, but make a group decision about the experiment that best demonstrates the Gravity Fact.
TIP: In advance, using index cards, prepare clues for groups having problems. Each clue card should be folded so that the clue diagram is not visible. When a group opens the card, they have to interpret the diagram.
Tip: Example diagrams are shown.
Clue #1: Attach one end of the string to the center of the pencil.
Clue #2 Hold the pencil in a horizontal direction and allow the paper clip to hang freely.
Clue #3 With the paper clip hanging freely, tilt the pencil.