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15 Cards in this Set
- Front
- Back
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Force |
A push or pull exerted on an object |
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Gravity |
The attractive force between two objects, it's strength depends on their masses and the distance between them |
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Law of universal gravitation |
The scientific law that states all objects in the universe attracts every other object |
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Mass |
The amount of matter in an 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 unless affected by a force, and an object in motion will stay in motion unless acted on by a force |
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Astronomy |
The study of objects in space |
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Axis |
The imaginary line that goes through Earth's center, as well as the North and South poles |
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Rotation |
The spinning motion of a planet on it's axis |
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Revolution |
The movement of one object around another |
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Orbit |
A path of an object as it revolves around an object in space |
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Calendar |
A system of organizing time that defines the beginning, lengths, and divisions of a year |
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Solstice |
The two days of the year when the sun reaches it's greatest distance north or south of the equator |
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Equinox |
The two days of the year on which neither hemisphere is tilted towards the sun |
