Page 15 - SGG_220316_Teachers_Handbook_Module_3

shaft that turns an depends on the strength
electric generator, of the wind.
which produces the
electricity. Better wind offshore,
but more of a challenge
in technology.
Reliable and can be
Tidal energy works by
using a tidal barrage (a easily switched on.

kind of dam) and Can destroy the habitat
Video Does not produce
building this across carbon dioxide. of estuary species.
estuaries, forcing water
through gaps
No fuel costs.
Wave energy works by
Difficult to scale up
harnessing the power of Does not produce technology to produce
carbon dioxide.
seawater moving in and Video

out of cavities which No fuel costs. large amounts of
electricity.
drives a turbine
Currently expensive to
In volcanic parts of set up.
earth, it is possible to
use the natural heat of Only works in parts of
the earth. Cold water is Potentially infinite the world where there is
pumped underground supply. volcanic activity.
and comes out as Video
steam. Steam can be No fuel costs. It can also be
used for heating or to dangerous; the
power turbines, elements found
creating electricity underground must be
disposed of carefully.
Biomass is decaying
plant or animal waste. Only a renewable
source if crops are
Biomass energy, a replaced.

renewable energy
Video Readily available. Depending on the type
source, can also be a of biomass, fuel
non-renewable energy
source. Biomass energy production could be in
competition with food
uses the energy found
in plants. production.
Reliable and can be
Hydroelectric power is easily switched on. Currently costly to build.
produced through the
movement of water Video Does not produce
through lakes, rivers carbon dioxide. Can cause flooding to
and dams communities.
No fuel costs.
Only renewable if trees
Wood Video Readily available. are replanted.

This project has been funded with support from the European Commission. This communication reflects the
views only of the author, and the Commission cannot be held responsible for any use which may be made of the

information contained therein.
pg. 15