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15 Cards in this Set
- Front
- Back
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Axis
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An imaginary line that passes through Earth's center and its North and South Poles
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Atmosphere
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The layer of air that surrounds Earth
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Revolve
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To travel in a closed path around an object such as Earth does as it moves around the sun
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Eclipse
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The passing of one object through the shadow of another
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Ellipse
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A figure shaped like an oval with both ends alike
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Rotate
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The spinning of Earth on its axis
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Full Moon
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The moon seen from the Earth as a whole circle
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Gibbous
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Curved out, humped. A gibbous moon is more than half full but less than full
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Waning (Wane)
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Lose size, become smaller gradually
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Gravity
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The natural force that causes objects to move or tend to move toward the center of the Earth.
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Telescope
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An instrument that magnifies distant objects, or makes them appear larger
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Orbit
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The path one body in space takes as it revolves around another body; such as that of Earth as it revolves around the sun
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Phases of the moon
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One of the changing stages of development of the moon's cycle
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Reflection
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The light energy that bounces off objects
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Refraction
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The bending of light rays when they pass through a substance
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