Energy and Its Forms

Energy can be found anywhere there is __________, heat, or light.

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NGSS.MS-PS3-4

NGSS.MS-PS3-5

Energy can not be created or __________; it only changes form. This is the First Law of Thermodynamics and is most commonly observed when energy is converted into heat.

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NGSS.MS-PS3-3

NGSS.MS-PS3-4

Energy can be possessed by an object in two different ways: potential energy and kinetic energy. __________ energy: stored energy due to the position, structure, or composition of matter (example: gasoline).

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NGSS.MS-PS3-2

__________ energy: matter that is in use or moving (example: movement of a car).

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NGSS.MS-PS3-1

NGSS.MS-PS3-5

There are 6 forms of energy which can be remembered with the mnemonic device - "MR CHEN".

Mechanical (kinetic and stored/potential),

Radiant (sunlight/solar energy),

C__________,

H__________,

E__________,

N__________.

• Chemical, Heat, Electric, Nuclear

• Constant, Hot, Energy, Null

• Chemical, Hot, Energy, Nuclear

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NGSS.MS-PS3-3

Energy can be classified as renewable or non-renewable.

_________________: once they are used, they are gone.

_____________: can be renewed or replenished in a short period of time.

About __________ of the energy consumed in the United States comes from non-renewable energy sources.

• 50%
• 91%

• 80%
• 70%

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NGSS.MS-ESS3-4

Non-Renewable Sources: fossil fuels: coal, natural gas, and __________ (oil).

Renewable Sources often called “__________” or “green” energy because the perception is that they do not pollute the air or harm the environment like the burning of fossil fuels.

__________________: Sunlight is captured using photovoltaic cells which convert energy from the sun into electricity. Advantages: easy, plentiful, clean. Disadvantages: undependable, hard to distribute/store; electricity expense.