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13 Cards in this Set
- Front
- Back
Big Bang
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The initial explosion that resulted in the formation and expansion of the universe.
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Equinox
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The two days of the year on which neither hemispher is tilted toward or away from the sun
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Gas Giants
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The name given to the first four outer planets: Jupiter, Saturn, Uranus, and Neptune
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Gravity
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The attractive force between two objects; its magnitude depends on their masses and the distance between them.
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Orbit
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The path of an object as it revolves around another object in space.
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Prominence
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A loop of gas that protrudes from the sun's surface, linking parts of sunspot regions
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Retrograde Rotation
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The spinning motion of a planet from east to west, opposite to the direction of rotation of most planets and moons.
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Revolution
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The movement of an object around another object.
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Rotation
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The spinning motion of a planet about its axis.
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Satellite
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Any object that revolves around another object in space.
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Solar Eclipse
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The blocking of sunlight to Earth that occurs when the moon is between the sun and Earth.
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Solstice
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The two days of the year on which the noon sun is directly overhead at either 23.5 degrees South or 23.5 degrees North.
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Sunspots
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Dark, cooler regions on the surface on the sun.
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