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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 |