types of energy energy can neither be created nor destroyed. energy changes from one kind to...
TRANSCRIPT
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Types of Energy
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Energy can neither be created nor destroyed. Energy changes from one kind to another.
The total energy of a system never changes.
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Anything that has mass and movement has kinetic energy.
The kinetic energy of an object in this case is given by the relation:
KE = (1/2)mv2
m=mass of the object
V=velocity of the object
The greater the mass or velocity of a moving object, the more kinetic energy it has.
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The greater the mass or velocity of a moving object, the more kinetic energy it has.
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Potential energy is the energy stored in a system. It is the energy that can be released to become kinetic or another form.
PE = mgh
PE = Energy (in Joules)
m = mass (in kilograms)
g = gravitational acceleration of the earth (9.8 m/sec2)
h = height above earth's surface (in meters)
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Mechanical energy is also the total amount of kinetic and potential energy
in a system.
Wind-up toys, grandfather clocks, and pogo sticks are examples of
mechanical energy. Wind power uses mechanical energy to help create
electricity.
Potential energy + Kinetic energy =
Mechanical energy
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Mechanical Energy Summary
Mechanical Energy
Potential Energy
Gravitational PE mgh
Elastic PEEnergy that is stretched or compressed.
Kinetic Energy The energy of motion
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What is Electromagnetic Energy?
Radio WavesMicrowavesInfraredVisible LightUltravioletX-raysGamma Rays
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What is Electrical Energy?• Energy caused by the movement of electrons
• Easily transported through power lines and converted into other forms of energy
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What is Chemical Energy? Energy that is available for release from chemical reactions.
The chemical bonds in a matchstick store energy that is transformed into thermal energy and electromagnetic energy when the match is struck.
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Examples of Stored Chemical Energy
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Nuclear energy is the energy stored in the nucleus of an atom.
What is Nuclear Energy?
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Summary of Energy-Part 1
Mechanical Energy•Energy of Motion and Position of everyday objects.
Electrical Energy•The energy associated with electric charges.
Chemical Energy•Energy stored in chemical bonds.
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Summary of Energy-Part 2
Electromagnetic Energy•Energy that travels through space in the form of waves.
Nuclear Energy•The energy stored in atomic nuclei
Thermal Energy•Heat Energy.
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QUIZ TIME!What type of energy cooks food in a microwave oven?
What type of energy is the spinning plate inside of a microwave oven?
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QUIZ TIME!Electrical energy is transported to your house through power lines.
When you plug an electric fan to a power outlet, electrical energy is transform into what type of energy?
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QUIZ TIME!
What energy transformation occurs
when an electric lamp is turned on?
ELECTRICAL ENERGY
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What types of energy are shown below?
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What types of energy are shown below?
Potential
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What type of energy is shown below?
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What type of energy is shown below?
Chemical
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What types of energy are shown below?
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What types of energy are shown below?
Electromagnetic(infrared with the remote and visible light from the TV)
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What type of energy is shown below?
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What type of energy is shown below?
Chemical
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What type of energy is shown below?
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What type of energy is shown below?
Electromagnetic (Infrared and Visible Light)
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Energy Conversion In A Car
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Chemical Energy
Electri
cal E
nerg
y
Mechanical Energy
Thermal Energy
Electromagnetic Energy
Energy Conversion