Power

1
Power
2
Stationary Power

• Canadians use about 2 000 000 000 000 000 000 J
  of electrical energy each year!
• Most of Canadas electrical energy comes from
  harnessing rapidly flowing rivers, burning fossil
  fuels, and splitting atoms to release nuclear
  energy.

3
Energy from Flowing Rivers

• Hydro-electric plants produce most of the
  electrical energy used in Canada.
• Hydro-electric plants use water pressure to
  generate electrical energy.

4
Energy from Fossil Fuels

• Coal, crude oil, and natural gas are products of
  once living tissues.
• Tremendous pressure and heat converted these
  decaying tissues into the materials we call
  fossil fuels.
• Burning fossil fuels produces large amounts of
  carbon dioxide gas, one of the biggest
  contributors to pollution.

5
Energy from Splitting Atoms

• During the process of nuclear fission a
  tremendous amount of energy is released (along
  with excess neutrons).
• The process of generating electrical energy
  through nuclear fission is called thermonuclear
  electrical generation.

6
Canadas Energy Resources

• Over 98 of Canadas electrical energy is
  produced by hydro-electric, thermoelectric or
  thermonuclear plants.

7
Delivering Energy to the Consumer

• Power plants are generally located great
  distances away from cities and communities in
  which they serve.
• Consequently energy must be transmitted over many
  kilometers of power lines.

8
Changing the Voltage

• Electrical transformers are devices that can
  increase or decrease the potential difference for
  power lines.
• Use the diagram on page 400 in the text book to
  fill in your diagram.

9
Energy Bucks

• Waking Up
• Alarm Clock or Radio..............................
  .............2
• Breakfast
• Microwave.........................................
  ......................2
• Stove/Oven........................................
  .....................5
• Toaster Oven......................................
  ....................3
• Refrigerator......................................
  .......................3

10
Ready for School

• Ready for School
• Air Conditioning/Heating..........................
  ......10
• Radio/CD Player ... 2
• TV/DVD Player.....................................
  ............3
• Shower/Bath.......................................
  ..............3
• Hair Dryer........................................
  ..................3
• Curling Iron/Curlers/Straightner..................
  .....3

11
Room Lighting

• Room Lighting
• Bedroom...........................................
  ...................2
• Bathroom..........................................
  ..................2
• Kitchen...........................................
  ....................2
• Family Room.......................................
  ..................2
• Other.............................................
  ......................2

12
Getting to School

• Getting to School
• Walk..............................................
  ....................0
• Bicycle...........................................
  ....................0
• School Bus........................................
  ...................1
• Carpool...........................................
  ....................2
• Family Vehicle....................................
  ................5

13
After School

• After School
• Air Conditioning/Heating..........................
  ......10
• Travel in Vehicle.................................
  ...................5
• Lights............................................
  ............................2
• Computer..........................................
  ......................3
• Video Game System.................................
  ...........3
• CD Player/Radio...................................
  .................2
• TV/DVD Player.....................................
  ..................3
• Telephone.........................................
  ......................1
• Snack Preparation.................................
  ...............2

14
Last Night

• Air Conditioning/Heating..........................
  ......10
• Microwave.........................................
  ......................2
• Stove/Oven........................................
  .....................5
• Toaster Oven......................................
  ....................3
• Refrigerator......................................
  .......................3
• Grill.............................................
  ...............................2
• Lights............................................
  ............................2
• TV/DVD Player.....................................
  ..................3
• Shower/Bath.......................................
  ...................3
• Hair Dryer........................................
  ........................3

15
Electrical Energy and the Environment
16
Effects of Hydroelectric Plants

• Hydroelectric plants appear to be the cleanest of
  the top 3 producers.
• There are no smokestacks, they use no radioactive
  material.
• But

17

• Reservoirs flood many acres of valuable land.
• When lands are flooded, the submerged vegetation
  decays and uses up the oxygen supply in the
  water, making it impossible for fish species to
  survive.

18
Effects of Fossil Fuels

• Open pit mining leaves land destroyed and
  unproductive.
• Underground mining produces waste that can seep
  into water supplies.
• Burning fossil fuels produces acid rain and an
  abundance of carbon dioxide, the main
  contributing gas to global warming.

19
Effects of Nuclear Energy

• The radioactive materials used can damage living
  tissues.
• If a nuclear reactor breaks down there is the
  potential for immediate and very serious damage
  to people, animals and property.

20
Alternate Sources
21
Types of Alternate Energy

• Solar Energy Energy from the sun using solar
  panals.
• Wind Energy Energy from windmills
• Tidal Energy Using the difference in high and
  low tide to generate electricity.