Ch. 5 Energy Resources

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Ch. 5Energy Resources
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Section 1Natural Resources
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• Natural resource any natural substance,
  organism, or energy form that living things use
• 2 types of natural resources
• 1. Renewable resource natural resource that can
  be used and replaced over a relatively short
  time. EX fresh water and trees
• 2. Nonrenewable resource natural resource that
  can not be replaced or that can only be replaced
  over thousands or millions of years. Ex oil and
  natural gas

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Ways to Conserve

• 3 ways to conserve natural resources
• Reduce
• Recycle
• Reuse
• Use only what is needed and take care of resources

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Section 2Fossil Fuels
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Fossil Fuels

• Fossil fuels non-renewable energy resource that
  forms in Earths crust over millions of yrs. From
  buried remains of once living organisms.
• Three Forms
• Solid -Coal
• Liquid-Petroleum (oil)
• Gas- Natural Gas

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3 Types of Fossils Fuels

• 1. Liquid Fossil Fuel
• Petroleum crude oil, oily mixture of flammable
  organic compounds.
• Petroleum is separated or refined to make
  gasoline, jet fuel, kerosene, diesel fuel, and
  fuel oil.

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• 2. Gaseous Fossil Fuel Natural Gas
• Gas stores use natural gas
• Methane, butane, and propane- compounds of
  natural gas
• 3. Solid Fossil Fuel Coal solid formed
  underground from buried, decomposed plant
  materials
• Once leading energy source, but caused air
  pollution

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Formation of Fossil Fuels

• Petroleum and natural gas form mainly from
  remains of microscopic sea life.
• Coal forms underground over millions of yrs. From
  decayed swamp plants.

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Obtaining Fossil Fuels

• 1. Drilling oil wells
• 2. Strip Mining
• U.S. imports ½ of the petroleum it uses from
  Middle East, South America, Africa, Mexico, and
  Canada

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Problems Due to Fossil Fuels

• 1. Acid Rain rain/snow with high amounts of acid
  due to air pollutants.
• Coal is burned, releases sulfur dioxide, sulfur
  dioxide combines with moisture in air to produce
  sulfuric acid
• 2. Mining causes environmental problems
• Removes soil, kills plants and animals
• Contaminates water sources
• 3. Drilling causes environmental problems
• Spills kill everything in path

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• 4. Smog photochemical fog produced by reactions
  of sunlight and air pollutants
• 5. Water pollution
• 6. Destruction of wildlife habitat

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Section 3Alternative Resources
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Alternative Resources

• 1. Nuclear Energy energy from nuclei of atoms.
• Fission process of nuclei of radioactive atoms
  being split.
• Fusion joining of small atoms to form large
  atoms.
• Pro (GOOD) great energy source with no problems
  like fossils fuels
• Con (BAD) produce radioactive wastes that cant
  be disposed of and over heating

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• 2. Solar Energy energy from sun
• Solar cells collect energy from sun to use in
  everyday life
• Pro great energy source, no pollution, quiet,
  reliable
• Con costs too much
• 3. Wind Energy energy from wind
• Wind turbines turn to pump water or produce
  electricity
• Pro dont cost much, no pollution, dont take up
  much room on land
• Con not many areas in US that have wind blowing
  strong and steady to produce electricity.

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• 4. Hydroelectric Energy electricity produced by
  falling water
• Pro inexpensive, little pollution, renewable
  source
• Con not everywhere has amount of water needed,
  when built it destroys forests and wildlife
  habitats.
• 5. Biomass organic matter that contains stored
  energy
• EX wood, charcoal, dung, gasohol
• Pro Does not cause air pollution
• Con not enough to meet all of our energy needs

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• 6. Geothermal Energy energy from within Earth
• Heat from within Earth produces steam or actual
  heat can be used.
• Con only available in certain areas