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15 Cards in this Set
- Front
- Back
Astronomy |
The study of the moon stars or other objects in space. |
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Axis |
The imaginary line that passes through earths center and the north and south poles, about which earth rotates. |
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Rotation |
The spining motion of an planet on its axis |
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Revolution |
The movement of an object around another object |
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Orbit |
The path of an object as it revolves around another object in space. |
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Calendar |
A system of organizing time that defines the beginning, length, and divisions of a year |
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Solstice |
The two days of a year on which the sun reaches its greatest distance north or south. |
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Equinox |
The two days of the year on which neither hemisphere is tilted toward or away from the sun. |
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Force |
A push or a pull exerted on an object |
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Gravity |
The attractive force between objects |
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Law of Universal Gravitation |
The scientific law that states that every object in the universe attracts every other object |
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Mass |
The amount of matter in and object |
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Weight |
The force of gravity on an object |
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Inertia |
The tendency of an object to resist a change in motion |
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Newton's first law of motion |
The scientific law that states that an object at rest will stay at rest and an object in motion will stay in motion with a constant speed and direction unless acted on by force. |