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Types of Energy

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Title: Types of Energy


1
What is Energy?
  • Mrs. Wisher
  • Earth Science

2
What is Energy?
  • The ability to produce change or make things move
  • Energy can produce
  • Light
  • Heat
  • Motion
  • Sound
  • Growth
  • Technology

3
Can you make things move?
  • Then you have energy
  • but there are different forms and types of
    energy

4
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

5
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

21
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.

30
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. 

31
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.

32
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.

33
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.

34
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.

35
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.

36
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.

37
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.

38
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.

39
Discussion
  • In your notebook, write down 2 reasons why it is
    important to research renewable energy sources.
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