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C3 Science Vocab
Vocabulary for Science Chapter 3
| Term | Definition |
|---|---|
| motion | a change in the position of an object |
| relative motion | the change in one object’s position compared with another object’s position |
| reference point | a place or object used to determine if an object is moving |
| velocity | a measure of how fast an object moves and the direction it is moving |
| acceleration | a change in the speed or direction that an object moves |
| speed | a measure of how fast an on object moves |
| Speed = | Distance/Time |
| thrust | a force that pushes or pulls an airplane forward |
| friction | a force that acts when two surfaces rub together |
| drag | a force caused by the air as the plane moves through it |
| force | any push or pull |
| gravity | is the force that pulls all objects toward each other |
| lift | a pushing force from below that keeps an airplane in the air |
| balanced force | two forces acting in opposite directions and the object does not move |
| contact force | must touch an object to affect it |
| non-contact force | these forces can affect objects without touching them |
| combined forces | forces that can cause a balance or unbalanced force |
Created by:
rklein
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