Use these links to learn more about fourth grade science topics.

Life Science
Physics
Astronomy
Earth Science
Chemistry
Moon Phases Information
Go to this link to learn about the phases of the Moon. Explore other pages on the site and learn some fascinating Moon facts.
Moon and Earth Phase View
The revolution of the Moon around the Earth makes the Moon appear as if it is changing shape in the sky. This is caused by the different angles from which we see the bright part of the Moon's surface. These are called "phases" of the Moon. Of course, the Moon doesn't generate any light itself; it just reflects the light of the Sun. The Moon passes through four major shapes during a cycle that repeats itself every 29.5 days. The phases always follow one another in the same order.
Moon Phase Simulator
It's kind of fun to play with. . .
Moon Phases Animated Gif
Click on this animated gif to learn the current phase of the moon.

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