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13 Cards in this Set
- Front
- Back
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Solar System
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a group of objects in space that move around a central star
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Orbit
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the path an object, such as a planet takes as it revolves around a second object
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Ellipse
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the shape of the Earth's orbit around the sun
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Planet
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a large object that moves around a star
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Rotation
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the spinning of a planet on its axis
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Revolution
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the action of one object moving around another in an orbital path
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Axis
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an imaginary line that runs through both poles of a planet
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Astronomer
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a person who studies stars, planets, and other objects on the sky
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Telescope
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an instrument people use to observe distant objects with their eyes
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Seasons
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caused by the different hemispheres of Earth being tilted toward are away from the sun
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Shadows
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a dark area where light is blocked
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Model
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a representation of an object or what something looks like
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Eclipse
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the partial or complete blocking of light of one body by another in the sky
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