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Gravity and Motion
Review of gravity and motion
Question | Answer |
---|---|
The force that attracts all objects toward each other. | Gravity |
The force of gravity on an object. | Weight |
This states that every object in the universe attracts every other object. | Law of universal gravitation |
The strength of the force of gravity depends on two factors:___________________ and ___________________. | Mass and Distance |
The amount of matter in an object. | Mass |
If mass increases, gravity __________________. | Increases |
The tendency of an object to resist a change in motion. | Inertia |
This 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 a force. | Newton's First Law of Motion |
If distance increases, gravity _____________________. | Decreases |
These two factors combine to keep the Earth in orbit around the Sun and the Moon in orbit around the Earth. | Gravity and Inertia |
If mass decreases, gravity _________________. | Decreases |
What would happen to your weight if you traveled to a planet that has a greater mass than Earth? | Your weight would increase |
If distance decreases, gravity ______________________. | Increases |
What would happen to your mass if you traveled to a planet with a smaller mass than Earth? | Your mass would stay the same |
If the mass of Earth suddenly doubled, what would happen to the gravitational force of Earth? | The gravitational force would also double. |
What would happen if the Sun suddenly disappeared from our solar system? | The planets would fly off through space in straight lines. |
What would happen if the Earth lost inertia? | It would fall into the Sun. |