Download Law of Conservation of Energy

Thursday, February 5th, 2015
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 Complete section for Thursday
 Add up your total score for the week
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SWBAT describe the law of conservation of
energy
SWBAT apply the law of conservation of
energy by looking at examples
Essential Question
 What is a scenario that demonstrates the law
of conservation of energy?
Definition
Examples
Facts/Characteristics
The Law of
Conservation of
Energy
Non-example or Picture
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This is his experiment
His experiment confirmed the conservation of
energy
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There are many ways now that we can receive
electrical energy
Lets assume we are using coal.
Energy cannot be created or destroyed
◦ Where does it come from, where does it end?
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Energy can change forms
◦ How does it change?
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Starts in the sun
Nuclear fusion
Light energy
Chemical energy (photosynthesis)
plants dies and store this as carbon
Thermal energy (burning coal)
Mechanical Energy (move generator)
Electrical energy (wires)
Light and thermal energy (light bulb)
From coal to light
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With your table try to come up with another
scenario
◦ Think about where the energy comes from, how it is
converted, and where it goes.
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What is a scenario that demonstrates the law
of conservation of energy?
◦ Use a different one from before
Which of the following statements correctly describes
the law of conservation of energy?
A.
An object always has the same amount of energy.
B.
Energy can change between many different forms,
such as potential, kinetic, and thermal, but it is
ultimately destroyed.
C.
The total quantity of energy in the universe never
changes, it just changes forms.
D.
The fact that you can fuse hydrogen into helium to
produce energy means that helium can be turned
into hydrogen to produce energy.
E.
It is not really possible for an object to gain or lose
potential energy, because energy cannot be
destroyed.
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