Renewable Resources

1
Renewable Resources

• SC.912.L.17.19

2
ENERGY

• Where does our Energy come from?

3
Where does our energy come from for?

• Electric light
• Mobile phones
• Power for your mp3
• TV
• Hot Water

4

• Energy for these things come from Energy
  Resources, that are converted into energy that we
  can easily use.
• Electricity is the main form of energy that we
  use and can power or charge what we need energy
  for.

5
To generate electricity

1. You need an energy source, e.g. coal
2. This is burnt to produce heat or steam
3. The heat or steam then drives a turbine
4. The turbine then can drive a generator
5. The generator then produces electricity
6. The electricity is then transported in cables to
   where it is needed

6
Energy Resources can be divided into 2 categories

• Non-Renewable Resources
• For example coal, oil, gas, uranium or lignite
• Once used these resources CANNOT be used again
• 2. Renewable Resources
• For example wind, water or solar
• These resources can be used over and over again

7
Renewable Resources WIND

• What is it? It the movement of air from high to
  low pressure
• How much left? Endless
• Advantages? No pollution
• Disadvantages? Winds change all the
• time, not predictable

8
Renewable Resources SOLAR

• What is it? Energy from the sun
• How much left? Endless
• Advantages? No pollution, can be used in remote
  areas
• Disadvantages? Can be expensive, needs sunlight
• At night it doesnt work

9
Renewable Resources BIO-ENERGY

• What is it? Biomass and Biogas
• fermented animal or plant waste
• vegetation from sustainable sources
• How much left? Endless
• Advantages? Good availability
• Disadvantages? Can be expensive to set up

10
Renewable Resources HYDRO

• What is it? Movement of water drives a turbine
• How much left? Endless
• Advantages? No CO2 emissions, can control
  flooding and provide a good water supply to an
  area
• Disadvantages? Large areas maybe flooded. Visual
  and water pollution

11
Renewable Resources GEOTHERMAL

• What is it? Heat from the ground often used to
  heat water
• How much left? A lot
• Advantages? No CO2 emissions
• Disadvantages? Expensive and can only be used in
  certain parts of the world

12
Renewable Resources WATER TIDAL

• What is it? Movement of sea drives turbines
• How much left? Endless
• Advantages? Can produce a lot of electricity, no
  CO2 emissions
• Disadvantages? Not many suitable sites