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energy
Ch 32
| Question | Answer |
|---|---|
| energy | the ability to do work. |
| units of energy and work are | joules |
| potential energy | energy something has because of it position ( up high) or condition( a spring wound tight) |
| chemical energy | energy something has in food or in fuel |
| kinetic energy | energy something has because it moves |
| heat energy | energy something has because it gets warm |
| electrical energy | energy supplied by Electric Ireland( 220 – 240V) |
| light energy | energy which comes from the sun and from light bulbs. |
| element found in light bulbs | they contain a wire made of tungsten |
| crookes radiometer is used to show | light if a form of energy |
| sound energy | caused by vibrations |
| magnetic energy | causes movement |
| law of conservation of energy | energy cannot be created or destroyed it can only be changed from one type to another |
| energy changers | a kettle changes electrical energy to heat energy |
| there are two types of nuclear energy | fission and fusion |
| the element found in thermometers is called | mercury |
| photosynthesis | the way green plants use energy to make food |
| sustainability | the conservation of balance in the worlds ecology indefinitely |
| work is | force multiplied by distance |
| power is | work done divided by time taken |
Created by:
PHealy
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