Renewable Energy

1
Renewable Energy
Supplies of coal, oil and gas are running out.
These fossil fuels are a finite resources that
will never be available again when we have
consumed them. They are said to be Non-renewable
sources of energy
Renewable Sources of Energy are those which will
not run out.
2
They include- 1. Solar Power
2. Wind Power
3. Wave Power 4.
Tidal Power 5.
Hydroelectric Power 6.
Bio-fuels 7. Geothermal
Power Click on a Renewable Energy Source title
or one of the pictures to view more
information about that type of Renewable Energy

3
Solar Power
The light and heat energy radiated from the sun
provides us with SOLAR POWER

• There are three main methods of
  harnessing the energy arriving here from the sun.
• Solar Cells these devices convert the light
• energy from the sun into electrical energy.
• They are commonly found powering calculators
• but they are still expensive and you need many
• of them to produce a significant amount of
• electrical energy.
• Solar Panels these are used to heat
  
• water flowing though pipes on their
  
• surface. The heated water can be used
  for
• washing or for warming buildings.
• Solar Furnace these use mirrors to
• concentrate the energy into a small
  area.
• Small ones can be used to cook food in
• third world countries.

Click arrow to return to list
4
Wind POWER
Winds are caused by air moving from place to
place due to differences in air pressure. Moving
air has a lot of kinetic energy that can be
harnessed using windmills
The kinetic energy can be used directly to drive
water pumps or turn mill wheels to grind grain.
Click arrow to return to list
Other windmills or aero-generators can be used to
produce electricity when the winds kinetic energy
is used to turn a generator.
One windmill on its own cant generate much
electricityif we put up lots, we call it a
Wind Farm. Here is a picture of one . . . .
5
Wave Power
Waves crash onto seashores with thunderous power
on thousands of miles of beaches all around the
world. Using floats called ducks which move up
and down when a wave passes, scientists are
trying to harness this massive power source.
There are other ways of harnessing wave power
at the end of this show your teacher might let
you try and find out about some of them if you
ask them nicely.
Click arrow to return to list
6
Tidal Power

• Click on the question mark to take you to a
  website that is all about tidal power.

Click arrow to return to list
7
Hydroelectric Power
Click arrow to return to list
8
Bio-Fuels
Click arrow to return to list
9
Geothermal
Click arrow to return to list
10
Summary and Extensions

• Crossword for you to do
• (click here to take you to the crossword)

Interesting Links to Look at If You Have
Time http//www.infinitepower.org/pdf/FactSheet-07
.pdf
If you have headphones or speakers you can click
the movie symbol to see a summary film. (its best
if you have sound for this)
Further Reading Advanced stuff !
Click arrow to return to start