17/10/2013 1 Forms of Energy Junior Science Energy is all around us…. …it can take many forms. Forms of Energy The five main forms of energy include: Heat Chemical Electromagnetic Nuclear Mechanical All Energy can be classified as being either… Stored Energy (Potential Energy) Energy in Action (Kinetic Energy) Potential Energy The stored energy in a body due to its position or shape. An objects has potential energy because a force has moved or changed it in someway. When an object releases its stored energy it is converted into another form of energy
Transcript
17/10/2013
1
Forms of Energy Junior Science
Energy is all around us….
…it can take many forms.
Forms of Energy
The five main forms of energy include:
Heat
Chemical
Electromagnetic
Nuclear
Mechanical
All Energy can be classified as
being either… Stored Energy (Potential Energy)
Energy in Action (Kinetic Energy)
Potential Energy
The stored energy in a body due
to its position or shape.
An objects has potential energy
because a force has moved or
changed it in someway.
When an object releases its stored energy it is
converted into another form
of energy
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Kinetic Energy
Kinetic Energy is the energy
found in moving objects.
The more kinetic energy an
object has the faster it moves.
When an object slows down its kinetic energy is
converted into another type
of energy
Energy can
converts from one
form to another
And....
it can also spread
out until it is not
noticed any more.
Heat
Sound
Light Energy
Electrical Energy
Sound Energy
Heat Energy
Magnetic Energy
Mechanical
Energy
Nuclear
Energy Chemical
Energy
Heat Energy
What is Thermal Energy?
Heat energy
The heat energy of an object determines how active its atoms
are.
A hot object is one whose atoms and molecules are excited and show rapid
movement.
A cooler object's molecules and atoms will show less movement.
Chemical 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 when the match is struck.
What is Electromagnetic Energy?
Light energy
o Includes energy from gamma rays, xrays,
ultraviolet rays, visible light, infrared rays,
microwave and radio bands
Electrical Energy
What is Electrical Energy?
Energy caused by the movement of electrons
Electrical energy is easily transported
through power lines and converted into
other forms of energy
Mechanical Energy
What is Mechanical Energy?
Energy due to a object’s motion (kinetic) or position
(potential).
The bowling ball has mechanical energy.
When the ball strikes the pins, mechanical energy is
transferred to the pins!
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Examples of Mechanical Energy
Class Challenge
Draw a flow map showing the flow of energy transformations in a car from starting vehicle to driving.
