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Science Harbison
studying for gravity e.t.c.
| Question | Answer |
|---|---|
| force | push or pull |
| isaac newton | a person who discovered gravity |
| gravity | attracts all objects toward eachother |
| law of universal gravitation | states that every object in the universe attracts every other object |
| newtons | measures the amount of gravity between objects |
| mass | the amount of matter in an object |
| weight | the force of gravity ON and object |
| how much would we weigh on the moon (fraction wise) | 1/6 of our weight on earth |
| inertia | the tendancy of and object to resist a change in motion |
| newtons first law of motion | says 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 |
| what keeps the moon and the earth in orbit | gravity and inertia |