Gravity Experiment

Spinning Bucket of Water

Materials you will need:
• Water• Bucket with a handle• A Strong Arm

Can you keep water inside a bucket if you turn it upside down? Try this experiment to see if you can keep water inside the bucket without spilling it.
Steps:
1. Fill the bucket three quarters of the way with water.
2. Take the bucket by the handle and start spinning it around at your side from the ground, up to the sky, turning your arm behind you as the bucket makes it way back down towards the ground.
3. Keep the speed and motion of rotation the same.
What happens? Does the water stay in the bucket or does it spill out of the bucket?
If you keep the speed up and a smooth motion of the rotation going around with your arm, the water will stay inside the bucket. This is due to the force of gravity pulling the water towards the center of the earth as the bucket heads down and as the bucket of water goes up towards the sky the motion (or direction) of the water is forced to stay inside the bucket (the wall and bottom) as it can not escape from inside the bucket.

Gravity Experiment

Spinning Ball

Materials you will need:
• Small rubber ball• Flat table top surface• Medium size canning jar (wide mouth) or a jar with a lip/neck (large mayonnaise jar)

Now see if you can lift the ball up from the table top without touching the ball or tipping over the jar. Were you able to do it?
Steps:
1. Place the ball on top of the table
2. Place the jar over the ball so that the ball is inside the mouth of the canning jar.
3. Start spinning the jar around in a circular motion (keeping it on the table).
4. Once the ball starts spinning inside the jar lift it from the table top.
5. The ball is lifted from the table and will continue to spin inside the jar until it loses is speed.
This works because the ball spinning inside the jar is trying to escape but the jar itself forces the ball to stay inside the wall of the jar. Due to the force of the spin or speed the ball will continue to spin until it loses its speed and gravity will pull it back to earth and the ball will fall from the jar.

Gravity Experiment

Flipping Clown - A continuation from the experiment - A Clown that will not Lie Down.

Materials you will need:
• Tape• A Marble• The other Half of the Ping-Pong Ball

Steps:
1. Take the pasticine (modelling clay) out of the ping-pong base.2. Put the marble in the base.3. Tape the other half of the ping-pong ball to the top of the paper tube.4. Stand the clown on a slight slope.
The clown will flip from head to toe and over again as the rolling marble makes the center of gravity move from one end of the clown to the other end.

Magic Egg

Steps:
1. Place the hard-boiled egg in the glass jar.2. Slowly pour in the vinegar until the egg is completely covered.3. Screw the lid back on the jar - tightly.4. Let this sit for at least one week.5. After a week has passed; 6. Drain the vinegar from the jar.7. Dry the egg with a paper towel.
What happened to the eggshell?The vinegar (acid) dissolves the eggshell and leaves you with a rubbery egg. You can bounce the egg; but do not drop from a high height.