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Gravity & Motion
Sicence
Term | Definition |
---|---|
Mass | Body of matter with no specific shape, weight, depends on gravity Ex: Sun is very massive |
Matter | Something that has mass and takes up space = solid, liquid, gas, & plasma Ex: raindrops, snow, water, vapor, Earth |
Gravity | Force of action between 2 objects; both depend on mass & distance |
Rotation | Movement of an object on its axis spinning counter-clockwise |
Revolution | Movement of a celestial object around another orbital path |
Orbit | A path a celestial object takes around another |
Newton-law of universal gravitation | Every object in the universe attracts every other object |
Inertia | The tendency of an object to resist a change in motion. More mass=greater the inertia |
Newtons | Units that measure the force of gravity |
The strength of the force of gravity between 2 objects depends on 2 factor: the masses of the objects & the distance between them. |