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Warm-up. Get out your interactive notebook and a pencil. Turn to page ___ and cut out the moon phase calendar. Create a tab and label it Astronomy. Think about the following question: What does our solar system consist of? . Motion of the Earth. Review.
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Warm-up • Get out your interactive notebook and a pencil. • Turn to page ___ and cut out the moon phase calendar. • Create a tab and label it Astronomy. Think about the following question: What does our solar system consist of?
Review What does the solar system consist of? What is at the center of the solar system? THE SUN! Heliocentric~ Sun Centered Video Geocentric~ Earth Centered 1) Sun 2) Planets 3) Asteroids 4) The natural satellites of the planets 5) Comets 6) Interplanetary dust 7) Meteoroids
Axis An imaginary line which runs through both poles of a planet.
Rotation of the Earth • The Earth is spinning upon a central axis. • The Earth's axis is tipped over about 23.5° • The Earth rotates around once in 24 hours creating day and night.
Direction of the Rotation In which direction does the earth rotate?
Revolution of the Earth • The earth revolves around the sun. • The orbit is elliptic. • The Earth's tilt stays constant. • The Earth completes one revolution in 365 days.