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Force and Motion
| Term | Definition |
|---|---|
| position | the location of an object |
| distance | the length of a line between two points |
| motion | a change in an object’s position |
| direction | the path that a moving object follows |
| speed | a measure of how far an object moves in a certain amount of time; Distance / Time |
| force | a push or pull on an object |
| mass | how much matter makes up an object |
| matter | anything that has mass and takes up space |
| gravity | a force that pulls objects toward each other |
| friction | a force that acts against motion; causes objects to move slower and eventually stop moving |
| accelerate | to go faster |
| decelerate | to slow down |
| inertia | a property of matter referring to the way an object remains at rest and doesn't move unless someone or something forces it to move. |
| work | the ability to move an object. |
| pulley | has a wheel with a grooved rim in which a rope can run around in order to lift a load easier than without it. |
| wheel and axle | consists of a bar that a wheel revolves around on or along with it. |
| lever | a simple machine that is a board that can move on a fixed point, called a fulcrum, and can be used to move an object up or down. |
| wedge | simple machine that is actually two inclined planes joined together back to back. |
| gear | made of two wheels that have notches that fit together either directly or by a chain or belt which allows one wheel to turn the other wheel. |
| energy | the ability to do work. |
| kinetic energy | the energy of motion. |
| potential energy | stored energy |
| chemical energy | energy that certain matter has because of the way its atoms are connected together. |
| electrical energy | the movement of electrical charges |
| light and sound energy | are forms of energy that travel in waves |
| thermal energy | created by the movement of the particles that make up matter. |
| nuclear energy | energy stored in the nucleus of an atom. |
| radiation | energy that is given off in the form of particles or rays |
| conduction | the transfer of heat energy from one object to another. |
| conductor | a material that allows heat to run through it. |
| insulator | a material that doesn't allow very much heat to run through it. |
Created by:
mrstwilliams
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