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Forms of
Energy |
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all of the known energy on the Earth comes form the Sun, but
there are many different kinds or forms of energy.
All of forms of energy measure the ability of an object or
system to do work, therefore there are different ways that
an object or a system can have energy.
Energy can be transformed,
transferred or changed into other forms of energy.
Energy transfers are never 100% efficient.
Think about it!
Below is a picture of the sun and a picture of a car at a
gasoline station. If all of the energy found on Earth comes
from the Sun, how does the Sun's energy transform into an
energy a car needs (gasoline or oil) to move? |
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The Different Forms of Energy
All forms of energy fall under the categories
of either Potential Energy or Kinetic Energy.
Gravitational Energy, Nuclear Energy,
Stored Mechanical Energy and Chemical Energy
are all potential energies.
Electricity, Motion, Radiant Energy,
Sound and Thermal Energy are all
kinetic energies.
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Gravitational Energy
- Energy an object or substance has because of its
position. Energy stored in an object's height. The
higher and heavier the object, the more gravitational
energy is stored.
Examples: Water held
by a dam, a boulder at the edge of a mountain, roller
coasters, a skateboard on the top of a ramp.
Gravitational Energy Videos
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Motion - The
movement of objects or substances from one place to
another. The faster objects move, the more energy
is stored. It takes energy to get an object moving,
and energy is released when an object slows down
Examples: Moving cars,
planes, trains, people, animals, balls, wind ...anything
moving.
Motion
Energy Videos
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Nuclear Energy -
Energy stored in the nucleus of an atom. Holds the
atom together. The energy that holds the nucleus together.
Splitting an atom (fission) releases the stored energy.
Examples: Nuclear
bomb, nuclear power plant.
Nuclear
Energy Videos
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Electricity
- Caused by the movement of electrons. Electricity
id delivered by tiny charged particles called electrons,
usually moving through a wire.
Examples: Found in
generators, devices connected by wires (TV, phones,
computers) lighting, the brain, electric eels, static
electricity.
Electricity
Videos
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Stored Mechanical Energy
- Stored in an object by the application of force
or tension. Must push or pull on an object.
Examples: A stretched
rubber band, compressed spring, a wind-up watch.
Stored
Mechanical Energy Videos
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Radiant Energy -
(Light) electromagnetic energy that travels in transverse
waves. Waves that emit energy.
Examples: Light, sunshine,
waves from a radio, television, gamma rays, x-rays.
Radiant
Energy Videos
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Chemical Energy
- Energy stored in the bonds of atoms and molecules.
It holds molecules together.In plants photosynthesis
breaks down carbon dioxide and water and converts
it into chemical energy.
Examples: Food, gas,
batteries, coal, wood, oil and other fuels.
Chemical
Energy Videos
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Sound - Movement
of energy through substances in the form of longitudinal/compression
waves. Sound is produced when a force causes an object
or substance to vibrate. Usually energy in sound is
far less than other forms of energy.
Examples:
Music, voices.
Sound
Energy Videos
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Thermal Energy
- Is the vibration and movement of the atoms and molecules
within substances. As an object is heated, its atoms
and molecules move and collide faster. The result
of the transfer of of thermal energy is called heat.
Geothermal energy is the thermal energy in the Earth.
Examples: Volcanoes,
geyser, fire, the Sun's heat, the result of energy
transfers such as batteries, electricity or fuels.
Thermal/Heat
Energy Videos
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Pearson
Leveled-Readers (School must use Pearson
login to view) |
Click link, login, then click link again to activate
Energy
Read-Along Book: Grade 1
Energy
Read-Along Book: Grade 2
Energy
Read-Along Book: Grade 3
Energy
Read-Along: Grade 6
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Pearson
Successnet - Scott Foresmen Science (School
must use Pearson login to view) |
| Chapter
11 - Physical Science |
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