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Ch 15 Sec 3

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  • 1. CH 15 Sec 3 Energy Resources
  • 2.  
  • 3. Natural Resources
    • Needs that are provided by nature
    • 2 types
      • Renewable – nature replaces or replenishes them
        • Solar, wind, hydro
      • Nonrenewable – limited supply
        • Oil, coal
  • 4.  
  • 5. Renewable Energy sources
    • Water – Hydroelectric, rivers, waterfalls, dams (need to be near water)
  • 6. Renewable Energy sources
    • Geothermal – heat from the earth (need to be near hotspots)
  • 7.  
  • 8.  
  • 9. Renewable Energy sources
    • Solar – energy from the suns rays (capture, clouds, night)
  • 10. Renewable Energy sources
    • Wind – Wind energy pushes turbines (need many turbines for a little energy, consistently windy areas)
  • 11. Other renewable resources
    • Biomass – chemical energy stored in living things
    • Hydrogen fuel cell – creates energy by reacting hydrogen and oxygen
  • 12. Nonrenewable energy sources
    • Oil, coal, natural gas
    • Likely to run out in our lifetime
    • Creates pollution
  • 13. Air Pollution
  • 14. Fossil Fuels
  • 15. Nonrenewable energy sources
    • Nuclear Energy
    • Create heat by splitting Uranium atoms
    • + clean, cheap, efficient
    • - dangerous, uranium is limited, but plentiful
  • 16. Conserving Energy Resources
    • Reduce energy needs and increasing energy efficiency
    • Problems – convenience and initial cost