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Science 8th
Chapter 5 Motion
| Question | Answer |
|---|---|
| Force | A push or pull that always acts on an object |
| Gravity | The force of attraction between objects |
| Acceleration | A change in a moving objects speed or direction |
| Friction | A force that always acts to oppose motion |
| Mass | A measure that does not change when you go from a high mountain to sea level or to the moon. |
| Velocity | Speed of an object in a particular direction |
| Reference Point | Object that appears to stay in place |
| Helpful Friction | Brakes |
| Harmful Friction | Where's down moving parts |
| What do you need to know to calculate acceleration? | Speed and velocity. |
| What is part 2 of the Universal Law of Gravity State? | Gravitational force decreases as distance increases. |
| What does acceleration mean? | The rate at which velocity changes. |
| The law of universal gravitation says that gravitational force is related to what and what? | Mass and distance |
| When would someone who is moving, like on a skateboard, not be accelerating? | When they have constant speed or direction. |
| What would a graph for positive acceleration look like? | Upward Curve |
| What is Weight? | How much gravity it takes to hold an object. |
| To produce a change in motion, a force must be? | Unbalanced |
| What type of friction is a mover using when he/she puts furniture on wheels? | rolling kinetic friction |
| How does an unbalanced force cause an object's motion to change? | speed, direction |
Created by:
chefgrace03
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