Types of Energy

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What is Energy?

• Mrs. Wisher
• Earth Science

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What is Energy?

• The ability to produce change or make things move
• Energy can produce
• Light
• Heat
• Motion
• Sound
• Growth
• Technology

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Can you make things move?

• Then you have energy
• but there are different forms and types of
  energy

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Forms of Energy

• Kinectic
• The energy of motion
• Electrical, Radiant, Thermal, Sound, and
  Mechanical are forms of kinetic energy
• Potential
• Stored energy and energy of position
• Chemical Nuclear energy are potential energy

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Chemical Energy

• What holds atoms in molecules together
• is released by chemical reactions like burning
  wood
• Biomass, petroleum, and natural gas are examples
  of stored chemical energy

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Nuclear Energy

• Energy stored in the nucleus of an atom
• Holds protons and neutrons together in an atoms
  nucleus
• Powers the sun and nuclear power plants

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Electrical Energy

• The movement of electrons through matter
• Electricity lightning are forms of electrical
  energy

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Thermal Energy

• The random motion or vibration of atoms in matter
• The faster the atoms vibrate the more heat energy
  they have
• Geothermal energy is an example of thermal energy

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Radiant Energy

• The energy carried by waves
• Light and solar are types of radiant energy

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Discussion

• Turn to your partner and discuss the difference
  between kinetic potential energy

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Mechanical Energy

• The energy of an object moving from one place to
  another
• Wind energy is a mechanical energy
• When you ride a bike you use mechanical energy

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Sound Energy

• The movement of energy through waves
• The air molecules move tiny bones in your ear
• The message of sound then moves to your brain
• Can also vibrate objects

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Energy can be changed from one form to another

• Chemical energy in gasoline is changed to heat
  energy and then to mechanical energy in a car

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Sources of Energy

• Renewable
• Supplies are replenished frequently
• Biomass, geothermal, hydropower, solar and wind

• Nonrenewable
• Can not be replenished within a short time
• Coal, petroleum, uranium, natural gas are
  examples.

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Petroleum

• is refined into gasoline
• Number one energy source in the U.S.
• Provides 37 of Americas total energy
  consumption.
• Saudia Arabia has the largest known reserves of
  me.
• My major use is for transportation. 

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Coal

• I generate 45.9 percent of the nations
  electricity
• Im Americas most abundant source of energy
• Wyoming, West Virginia Kentucky are states that
  produce me.

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Natural Gas

• I heat more than half of the nations homes.
• Im colorless and odorless.
• Chemical name is methane.
• Industry is my largest consumer in the U.S.
• Im a cleaner burning fossil fuel.

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Uranium

• Im the nations third leading source for
  generating electricity.
• Im presently being used in over 100 locations in
  the U.S.
• I supply about 21 of U.S. electricity.
• I was first used in 1957 to make electricity.
• The U.S. leads the world in production of
  electricity from me.

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Hydroelectric Power

• I supply 5-10 of U.S. electricity, depending on
  the amount of rainfall.
• Im limited to certain geographic areas of the
  U.S.
• I provide 16 of the worlds electricity.
• Im being used in over 2,000 locations in the
  U.S.
• My facilities can disrupt wildlife fish
  populations.

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Biomass

• Methane gas can be made from me.
• Photosynthesis stores radiant energy in me.
• I get my energy from wood, garbage, and
  agricultural wastes.
• I can be used to generate electricity.
• Ethanol can be made from me and used as a
  transportation fuel.
• Burning me can produce air pollution.

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Geothermal

• I produce less than one percent of U.S. Energy.
• Im used mainly in western states.
• I can be used for home heating.
• My energy comes from the Earths core.
• My major use is the production of electricity.
• I get my energy as a result of radioactive decay.

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Wind

• Most of my electricity is from Texas, Iowa,
  western states.
• I convert my motion energy directly into
  electrical energy with no cost for the fuel.
• I produce no air pollution.
• My turbines operate about ¾ of the time.
• I produce almost 2 of U.S. electricity.
• Im caused by uneven heating of the Earths
  surface.

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Solar

• Im not available at all hours of the day.
• I can be converted directly into electricity
  using photovoltaic cells.
• Im great for water and home heating.
• I work better in some parts of the country.
• My energy is stored in fossil fuels.
• Im free to use, but you have to purchase and
  maintain my equipment.

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Discussion

• In your notebook, write down 2 reasons why it is
  important to research renewable energy sources.