Renewable Energy Sources Sources that won’t by ert554898

VIEWS: 6 PAGES: 22

									Renewable Energy
    Sources
Sources that won’t run out!
The Sun is the source of nearly all energy
                on Earth!
Prehistoric trees captured
energy from the Sun




Coal is the
remains of
prehistoric trees.
Coal will
eventually run
out.
                               <40


It is estimated that we have less than
40 years of oil left!
Millions of years ago, tiny
plants in the sea got their
energy from the Sun.

Tiny sea animals ate the
tiny sea plants.


When they died, their
bodies sank to the
bottom and, over
millions of years,
became oil.
What are the disadvantages of burning
coal, oil and gas?
Why does burning fossil fuels
cause so many problems?

 Why does transporting fossil
 fuels cause problems?

      Why are fossil fuels running
      out?
We have to find energy sources
that are renewable…
SOLAR COLLECTORS
WIND TURBINES
HYDRO-ELECTRICITY
The turbines inside a dam
How many are needed?
New ideas?
Geothermal
Biomass




Logs, twigs, straw, dung, leaves…..
Hydro-electric dam
Wave energy
Free, renewable
energy.
The technology is here.
    Renewable Energy
       Sources…
• A good idea?
• What are the advantages?
• What are the disadvantages?
• What about the environmental
  impact?
• Would you want a wind turbine
  next-door?
                     West Wight Middle School Science

								
To top