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Ch 32

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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