2. Energy sources
Renewable and non-renewable energy sources used to produce electricity (2005)
coal
natural
gas
oil
8.9 %
19.9 %
28.2 %
16.6 %
26.2 %
uranium
Renewable energy sources
49.1 %
45.2 %
4 %
hydroelectric energy eolic energy
biomass
energy
1% solar energy
4. Coal
Open pit mines
Underground mines
Uses:
electricity, heat, steel
An organic
sedimentary rock
formed from
plant material.
Anthracite coal
produces the
most heat.
7. Uses:
heat, electricity and
gases, such as ethanol
Biomass energy
This is energy obtained
when organic matter is
burned.
Energy crops
Organic waste
Plant materials
8. Hydroelectric energy
transformer
generator
Hydroelectric power station
lock gate
turbine
This is energy
produced by
the movement
of water.
maximum kinetic energy
minimum potential energy
Uses:
heat, electricity
minimum kinetic energy
maximum potential energy
9. Solar energy
Lighthouse
This is energy
derived from
sunlight.
HomesPhotovoltaic solar power facility
Uses:
heat, electricity
hot water out
cold water in
Solar water heater
12. Tidal energy
This is energy
generated from ocean
movement, mainly
from tides.
SEE ANIMATION
High tide
Low tide
Energy is generated
by the difference in
height between high
and low tide.
13. turbine
generator
low
tideLock gate opens.
Water flows out of the reservoir.
Lock gate closes.
The reservoir is full of water.Water flows into the reservoir.
Lock gate opens.
Tidal energy
This is energy
generated from ocean
movement, mainly
from tides.
TIDAL POWER STATION
High tide
Low tide
Energy is generated
by the difference in
height between high
and low tide.
high
tide