Friday, May 15, 2009

This week in science we learned more about how the Earth's gravitational pull affects the Moon. We did an experiment to see what would happen if the Earth suddenly disappeared. We did the by getting a board of would that had a large circular hole vut out of it and an attachable part on the outside of it that could be removed. We set a ball in motion in the ring and when it came around by the attachable part someone took out the attachable part and the ball went out of the ring in a straight line. This means if the Earth ever disappeared the gravitational pull would be gone and the moon would travel in a straight line. Another way the moon could ever get out of the Earth's gravitational pull is if somehow it started going extremely fast. If an object goes fast enough it can "escape" another objects orbit. This is called Escape Velocity.

This week we also worked on porjects and presentations on experiments we did with coffee filters. The experimnet my group and I did was to change the form of the coffee filter. We thought if the form changed the speed would change. We fiegured out that the crumpled coffee filter fell the fastest. This supported out hypothesis.

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