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16 Cards in this Set
- Front
- Back
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Terrestrial Planet
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One of the four smaller. rocky planets closest to our sun. They are: Mercury, Venus, Earth, and Mars.
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night sky
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When the sky is dark.
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Moon
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Earth's only natural SATTELITE.
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Axis
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The IMAGINARY line around which a sphere ROTATES.
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North Star
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The star positioned directly above Earth's North Pole.
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phase
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The SHAPE of the VISIBLE part of the moon.
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planet
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a large, round object ORBITING a star.
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rotation
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turning around on an axis.
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Astronomer
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A person who studies stars, planets, moons and other objects of the universe.
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force
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a push or pull.
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constella-
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A group of stars that humans see as a pattern.
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Gas Giant Planet
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One of the 4 planets in our solar system, made entirely of gasses.
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revolution
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to travel around something in a circular path
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shadow
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the darker area behind an object that is blocking the light
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orientation
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the direction something is pointing
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gravity
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The force that pulls everything into the orbit of the sun
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