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ScienceSolar System
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shadow
a dark area caused when an object blocks light falling on a surface
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Earth
a planet in our Solar System that has life on it
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Sun
the star at the center of our Solar Systems and supplies heat and light to Earth, its gravity keep the system in orbit.
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day/night
day: Earth faces the Sun and is lighted night: Earth faces away from the sun and is dark
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craters
bowl shaped indents or cavities on the surface of a planet that are caused by a collision with another object
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axis
a line, real or imaginary, around which something spins
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gravity
a force that pulls objects toward the center of the Earth
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rotation
the time it takes the Earth to make one complete rotation on its axis (24 hr period)
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sundial
an instrument that measures the time of day using the position of the Sun.
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moon
a natural satellite that orbits a planet
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orbit
the path one object takes as it revolves around another object in space
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compass
an instrument that shows direction and uses a small magnet to show North. (N E S W)
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