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Chapter 5 vocabulary
Science vocabulary
| Question | Answer |
|---|---|
| Motion | An objects change in position relative to a reference point. |
| Speed | The distance traveled divided by the time interval during which the motion occurred. |
| Velocity | The speed of an object in a particular direction. |
| Acceleration | The rate at which velocity changes over time; an object accelerates if its speed, direction, or both change. |
| Force | A push or pull exerted on an object in order to change the motion of the object; force has size and direction. |
| Newton | The SI unit for force. (Symbol, N) |
| Net force | The combination of all the forces acting on an object. |
| Friction | A force that opposes motion between two surfaces that are in contact |
| Gravity | A force of attraction between two objects that is due to their masses. |
| Weight | A measure of gravitational force exerted on an object; its value can change with the location of the object in the universe. |
| Mass | A measure of the amount of an object |