What is energy?

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What is energy? Discuss Write down some ideas
before research Search the Internet for some
definitions that fit your ideas How many types
of energy exist?
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Energy cannot be created or destroyed it can only
change from one form to another.
...energy conversions
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The following pages show a range of electrical
appliances. Each requires electrical energy. But
what is the main function of these appliances and
how is the electrical energy (input) converted?
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http//www.beaconlighting.com.au/energy_globes.php
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http//home.howstuffworks.com/how-to-maintain-an-a
ir-conditioner.htm
http//www.howstuffworks.com/ac.htm
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http//www.howstuffworks.com/speaker.htm
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http//www.howstuffworks.com/lcd.htm