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Earth, Sun, and Moon Science SOL 4.7 Solar System The sun, the nine planets and their moons, and the other objects that orbit the sun. Solar Eclipse The blocking of sunlight by the moon as the moon passes between the sun and the earth. Rotation One full spin of an object around an axis; the rotation of the Earth causes day and night. Revolution The movement of one object around an axis; the revolution of the Earth around the sun causes the seasons. Lunar Eclipse The darkening of the moon as it passes through the earth’s shadow. New Moon The moon is between the Earth and the sun; the sunlit side of the moon faces away. First Quarter One week after the new moon; half of the moon’s sunlit side of the moon faces away. Full Moon Two weeks after the new moon; the whole sunlit half of the moon faces the earth. Last Quarter Three weeks after the new moon; half of the sunlit side of the moon faces the Earth. Moon Phases The positions of the moon in its orbit around the Earth Earth The third planet from the sun; the planet where we live. Axis An imaginary line through a spinning object; the Earth rotates on its axis. Season One of the four periods of the year- spring, summer, fall, and winter. Planet A large body of matter revolving around the sun. Ellipse The shape of a circle that has been flattened a little. Waxing The moon phases leading up to a full moon. Waning The moon phases after the full moon. NASA National Aeronautics and Space Administration NOAA National Oceanic and Atmospheric Administration Aristotle The ancient philosopher who believed that the universe was a sphere with the Earth at its center. Copernicus Established the theory that the Earth revolved around the sun. Ptolemy Believed that the planets and the Sun orbited around the Earth. Galileo The first to use a telescope and discover evidence to support the theory of Copernicus. The End!