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Renewable v. Nonrenewable Resources

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Renewable v. Nonrenewable Resources SC.912.L.17.11 – PowerPoint PPT presentation

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Title: Renewable v. Nonrenewable Resources


1
Renewable v. Nonrenewable Resources
  • SC.912.L.17.11

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
Non-Renewable Resources COAL
  • What is it?
  • Formed underground from decaying plant material
  • How much left in the world?
  • About 200 years
  • Advantages?
  • Plenty left
  • Mining is getting more efficient
  • Disadvantages?
  • Pollution CO2 emissions (linked to global
    warming), SO2 (linked to acid rain)
  • Heavy bulky to transport

8
Non-Renewable Resources OIL
  • What is it?
  • Formed underground from decaying animal and
    plant material
  • How much left in the world?
  • About 40 years!
  • Advantages?
  • Quite easy to transport
  • Efficient in producing energy
  • Less pollution than coal
  • Disadvantages?
  • Not much left
  • Pollution air and danger of water pollution
    through spills

9
Non-Renewable Resources NATURAL GAS
  • What is it?
  • Formed underground from decaying animal and plant
    material
  • How much left in the world?
  • About 60 years
  • Advantages?
  • Clean, least polluting of all non-renewables
  • Easy to transport
  • Disadvantages?
  • Some air pollution
  • Danger of explosions

10
Non-Renewable Resources NUCLEAR
  • What is it?
  • Uses uranium, naturally found in some rocks
  • How much left in the world?
  • Not known
  • Advantages?
  • Not much waste and few CO2 emissions released, as
    well as, few other greenhouse gases
  • Disadvantages?
  • High cost to build and close down power stations.
  • Waste is radioactive. Problem with getting rid of
    waste safely

11
Non-Renewable Resources LIGNITE
  • What is it?
  • Formed underground from decaying plant material
  • How much left in the world?
  • In Northern Ireland, it is thought at least 30
    years
  • (SOURCE www.geographyinaction.co.uk/Issues/Lign
    ite)
  • Advantages?
  • For Northern Ireland a local resource, good for
    generating electricity
  • Disadvantages?
  • Air pollution, scarring of landscape through
    open-cast mining
  • High moisture content

12
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

13
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

14
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

15
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

16
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

17
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
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