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Unit 2 Energy
Science
| Term | Definition |
|---|---|
| work | transfer of energy to an object by using a force |
| energy | ability to cause change |
| power | rate at which work is done |
| kinetic energy | energy of an object due to its movement |
| potential energy | the energy that an object has because of the position, condition, or chemical composition of an object |
| mechanical energy | sum of an objects kinetic energy and potential energy due to gravity or elastic deformation.. |
| machine | devise that helps do work by changing the magnitude and/or direction of an applied force |
| mechanical advantage | a number that tells you how many times a machine multiplies input force |
| mechanical efficency | a quantity, usually expressed as a percentage that measures a ratio output to work input in a machine |
| lever | simple machine that consists of a bar that pivots at a fixed point |
| fulcrum | the point of which a lever pivots |
| wheel and axel | a simple machine consisting of 2 circular objects of different sizes; 2 wheels connected by an axle in the middle |
| pulley | a wheel over which a rope chain or wire passes |
| inclined plain | a simple machine that is straight, slanted surface, which facilitates the raising of loads; a ramp |
Created by:
m.carroll24
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