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Energy Transfer Search
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General.
Energy is measured in
Joules and comes in many forms.
Some examples are
chemical,
nuclear,
electrical,
heat, light, sound,
potential (gravitational
and elastic)
and kinetic
energy.
When one form of energy is changed
into another form,
we say that energy is transferred.
We can do useful things when energy is transferred.
For example, if we want to light a
room,
we can transfer electrical energy into light energy.
We can do this by switching on a
light
bulb.
If we want to travel from one place to
another,
we can transfer chemical energy into
kinetic
energy.
We can do this by getting on a
bus.
The amount of energy does
not increase or decrease during the transfer,
it is only changed from one form into others.
This is called "the conservation of
energy"
(not the same as conserving energy).
Not all of the energy is changed
into the form we want (the useful
form).
Some energy is changed into other
forms and is wasted.
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Energy Transfer Search
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Copyright © 2008 Dr. Colin France. All Rights Reserved.