Download - Types and Forms of Energy
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Energy
Energy exists in many forms.
Energy can be moved from one
object to another.
Energy can be changed from
one form to another.
Energy cannot be created ordestroyed.
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What is Always Present
But Never Visible?
Although energy isnt visible,
you can detect evidence of energy.
ENERGY
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Law of Conservation of Energy
With every transformation, some energy is
converted to less useful forms. Energy
conversions are not 100% efficient. The
energy output for the intended purpose is
seldom the same as the energy we put in.
100 J electricity in95 J heat out
5 J light out
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Potential Energy
The energy in matter due to its position or
the arrangement of its parts
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Kinetic Energy
Energy of a moving object
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Six Forms of Energy
Mechanical Chemical Electrical
Heat/ThermalLight/Radiant
Nuclear
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Mechanical Energy
Energy that movesobjects from place toplace
You use mechanicalenergy when you kick aball or turn the pedalsof a bicycle
Other examples includewater flowing in astream, tires rollingdown a road and soundwaves from our iPod.
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Chemical Energy
Energy released by achemical reaction
The food you eatcontains chemical
energy that is releasedwhen you digest yourmeal
Wood, coal, gasoline,and natural gas arefuels that containchemical energy
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Electrical Energy
Energy that comes fromthe electrons within atoms
It can be generated at a
power plant or inside abattery and can powereverything from remote-controlled cars torefrigerators
Lightning and staticelectricity are also forms of
electrical energy
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Heat (Thermal) Energy
Energy created bythe motion ofatoms and
molecules thatoccurs within anobject
Thermal energyexists when youheat a pot of wateron a stove
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Nuclear Energy
Energy contained in the
nucleus of an atom
Nuclear energy is releasedwhen nuclei are split apart
into several pieces, or
when they are combined to
form a single, larger
nucleus
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Light (Radiant) Energy
Energy that can movethrough empty space
The sun and stars are
powerful sources ofradiant energy
The light given off by light
bulbs and campfires arealso forms of radiantenergy
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Energy Conversion
All forms of energy can be converted intoother forms of energy
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Energy Forms
These forms of energy do work that end
up as motion, light, or heat.
Energy is used to power manufacturing,
light buildings, propel vehicles, and
communicate messages.
What else do we use energy for?
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Image Resources
Microsoft, Inc. (2009). Clip Art. Retrieved March 24, 2009, from
http://office.microsoft.com/en-us/clipart/default.aspx
ETH Renewable Energy Carriers (2010). Professorship of RenewableEnergy Carriers. Retrieved May 5, 2010, from
http://www.pre.ethz.ch/research/projects/?id=solarfuels
http://office.microsoft.com/en-us/clipart/default.aspxhttp://www.pre.ethz.ch/research/projects/?id=solarfuelshttp://www.pre.ethz.ch/research/projects/?id=solarfuelshttp://office.microsoft.com/en-us/clipart/default.aspxhttp://office.microsoft.com/en-us/clipart/default.aspxhttp://office.microsoft.com/en-us/clipart/default.aspx