Sunday, January 10, 2010

Jan 4-8

This week, we learned about the moon. We did a simulation and also answered questions about it. In the simulation, the sun and earth stayed in the same location, and the moon revolved around the earth. Also, the earth and moon rotate. We learned that the side of the moon and the earth facing the sun is always light, daytime is when the side of the earth that you are on is light, and that it takes 29.55 days for the moon to revolve once around the earth. A rotation is when something spins around an axis. The orientation changes. A revolution is when something goes in a circle around something. The location changes.

There are 8 phases of the moon. Looking form above the North Pole, the moon travels around counterclockwise. It starts at new moon, then goes to waxing crescent, then first quarter, then
waxing gibbous, then full moon, then waning gibbous, then third quarter, then waning crescent, and then back to new moon.


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