Energy09
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Energy09

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Energy09 Energy09 Presentation Transcript

  • List 10 things in your life/home that require energy and make your life better
    • 12.
    • 13.
    • 14.
    • 15.
    • 16.
    • 17.
    • 18.
    • 19.
    • 20.
    • 21.
    • 22.
  • For your object
    • Tell what kind of energy goes in
    • Tell what kind of energy transformations happen inside it
    • Tell what kind of energy it puts out
  • Laws of Thermodynamics
    • 1: energy cannot be created or destroyed, it can only change forms
    • 2: whenever energy changes from one for to another, some usable energy is lost as heat
  • How “efficient” is something
    • Compares the energy it takes it with the energy it puts out
    • Incandescent vs CFL bulbs
    • A car =
    • Human muscles =
    • Power plant =
  • Life on the other side of the plug: Where does electricity come from?
  • Life on the other side of the plug
    • How is electricity made?
    • Put these words in order: generator, fuel, steam, turbine, water
  • What do we use as fuel?
    • Which of these is renewable?
    • Can a non-renewable source be used in a sustainable way?
  • In what proportions
  • A historical perspective
  • Uses of Energy
  • Uses of energy
  • Uses of energy
  • How do they work?
  • What to do
    • Ready about your type at http://www.energyquest.ca.gov/ (computer = “energy story”
    • Determine all of the transfers of energy that happen
    • Report on the pros and cons of this kind of energy
  • Cons pros # of transfers Transfers
  • Fossil Fuels Cons Pros # of transfers
  • Biomass Cons Pros # of transfers
  • Nuclear Cons Pros # of transfers
  • Hydroelectric Cons Pros # of transfers
  • Wind Cons Pros # of transfers
  • Solar Cons Pros # of transfers
  • Is there ONE solution?
  • Can you power the city?
    • Google “Power up”
    • Choose the link from “sciencenetlinks”
    • Try to make a winning combination
    • What happens if you only choose renewable energy?
  • How can consumption be reduced?
  • How “efficient” is a hot plate?