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Forces in Life
Unit 3/ Force and Motion
Term | Definition |
---|---|
Force | A push or pull that causes a change in motion of an object. |
Net force | The total of all the forces acting on an object. |
Unbalanced forces | Type of force that causes objects to start moving, stop moving or change directions. |
Balanced forces | Type of force that does not cause motion, Net force equal to zero. |
Inertia | The tendency of an object to resist changes in motion. |
Newton | A measurement used to describe units of force. |
Friction | The force that one surface exerts on another when the two rub against each other. |
Gravity | The force of attraction that pulls objects toward each other. |
Geotropism | Growth that happens in living things in response to gravity, such as the downward growth of plant roots. |
Heliotropism | The movement of a plant toward or away from light. |
turgor pressure | Pressure exerted by water inside plant cells on the inside of the cell wall. |
Work | When force is applied to an object and it moves as a result of the force. |