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15 Cards in this Set
- Front
- Back
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The study of the moon, stars & other objects in space
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Astronomy
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Earths spinning motion on it's axis
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Rotation
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The movement of an object around another object
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Revolution
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An imaginary line that passes through Earth's center & the North and South poles, about which the Earth rotates.
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Axis
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The path of an object as it revolves around another object in space.
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Orbit
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The two days of the year on which neither hemisphere is tilted toward or away from the sun.
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Equinox
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The two days of the year on which the noon sun is directly overhead at either 23.5 South or 23.5 North.
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Solstice
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The attractive force between two objects: its magnitude depends on their masses & the distance between them.
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Gravity
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Round pits on the moons surface
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Craters
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Feature of the moon like mountains
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Highlands
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Dark flat areas on the moon's surface.
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Maria
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A description of the solar system in which all of the planets revolve around the sun.
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Heliocentric
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A description of the solar system in which all the planets revolve around Eart.
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Geocentric
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The tendency of a moving object to continue in a straight line or a stationary object to remain in place.
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Inertia
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An elongated circle, or oval shape, the shape of the plants' orbits.
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Ellipse
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