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science vocabulary
vocabulary for school
| Term | Definition |
|---|---|
| reference point | A location which you compare other location |
| motion | the change of position over time |
| speed | a measurment of how fast something moves |
| velocity | a speed in a specific direction |
| vector | a quanity that has both size and direction |
| acceleration | the rate at which velocity changes over time |
| force | a push or pull something that changes the motion of the objects |
| net force | the overall force acting an object when on an of the forces acting on it are combine |
| newton first law of motion | object at rest tend to stay at rest until a object push or pull on it |
| interia | the resistance of an object to a change in the speed or the direction of its motion |
| 2nd law of motion | big force big acceleration |
| newtons 3rd law | for every action their is an opposite reaction |
| gravity | the force that object exerts on each other because of their masses |
| friction | a force that resist the motion between two surface in contact |
| fluid | a substance that can flow easily |
| air resistance | the friction due to air |
| mass | a measure are of low much matter an object is made from of |
| weight | the force of gravity on an object |
| energy | the ability to do work or to cause a change |
| kinetic energy | the energy of motion |
| potiential energy | stored energy the energy an object has due to its position |
| work | the use of force to move an object over a distance |
| mechanical energy | a combination of kinetic energy and potential energy an object has |
| law of conservation of energy | a law state that no matter how energy is transferred or transform all of the energy is form |
| inclined plane | is a slopping surface a ramp is an example of one |
| pulley | a wheel with a groove rim and rope of a cable |
| wheel and axel | is attached to shaft or axel |
| screw | is an inclined plane wrapped a round a slinder or a cone to form |
| lever | a solid bar that rotates or turns around a fixed point of fulcrum |
| wedge | a wedge is a simple machine that has a thick end and a thin end |