Ch 15 Sec 3

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Ch 15 Sec 3

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

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