The document discusses different types of alternative energy sources including wind power, solar power, geothermal energy, ethanol, hydroelectric power, biofuels, natural gas, hydrogen, and nuclear energy. Wind power harnesses the power of wind to spin turbine blades and generate electricity. Solar power uses sunlight to heat water or air or is converted to electricity through solar cells. Geothermal energy captures heat from below the Earth's surface to produce steam and generate electricity. Ethanol is a renewable fuel produced from fermenting biomass like corn.

1. Alternative Energy

2. Different types of Alternative Energy
(Fuel) Sources
• Wind Power
Wind energy harnesses the power of the wind
to propel the blades of wind turbines. The
rotation of turbine blades is converted into
electrical current by means of an electrical
generator.

3. Different types of Alternative Energy
(Fuel) Sources
• Solar Power
Solar energy is used commonly for
heating, cooking, the production of
electricity, and even in the desalination of
seawater. solar power works by trapping the
sun's rays into solar cells where this sunlight is
then converted into electricity.
Additionally, solar power uses sunlight that
hits solar thermal panels to convert sunlight to
heat water or air.

4. Different types of Alternative Energy
(Fuel) Sources
• Geothermal Energy
Literally, geothermal means, "earth heat."
Geothermal energy harnesses the heat energy
present underneath the Earth. Hot rocks
under the ground heat water to produce
steam. When holes are drilled in the
region, the steam that shoots up is purified
and is used to drive turbines, which power
electric generators

5. Different types of Alternative Energy
(Fuel) Sources
• Ethanol (E85)
• Ethanol, or grain alcohol, is produced by
fermenting biomass, commonly corn (though
other, lower-value feedstock's have been
tested in an effort to reduce costs) It is thus
inherently a renewable resource, and
contributes nothing in itself to greenhouse-gas
loading of the atmosphere

6. Different types of Alternative Energy
(Fuel) Sources
• HYDROELECTRIC POWER
• Hydroelectric power is generated from
dammed water that drives a water turbine
and generator. Tidal power is one version of
this. The power of the water of a tide creates
pressure that will turn either a turbine or a
water wheel. This power then is able to
provide energy to the electric generator

7. Different types of Alternative Energy
(Fuel) Sources
• BIOFUELS
• Biofuels are fuels that are made from
animals or plants. They may include methane
from animal waste, wood chippings, or
wood. Today ethanol has been getting a lot of
attention for its use in combination with
gasoline for transportation use.

8. Different types of Alternative Energy
(Fuel) Sources
• NATURAL GAS
• Natural gas is a fossil fuel. It
does, however, have some differences. It does
not produce carbon dioxide, which is the main
greenhouse gas. This makes natural gas a
better option. There is also still a rather large
supply of natural gas in the world.

9. Different types of Alternative Energy
(Fuel) Sources
• HYDROGEN
• Hydrogen so far has not proven to be a very
profitable energy source since it takes more
energy to manufacture than the hydrogen
actually produces. It is, however, a very good
fuel for the environment and has turned out
to be a good energy source for vehicles.

10. Different types of Alternative Energy
(Fuel) Sources
• NUCLEAR ENERGY
• Nuclear energy is energy created through
atoms. By either splitting atoms (fission) or
merging them (fusion), it creates energy from the
reaction. Nuclear energy, while it does produce a
large amount of power, has several other
hazards. Nuclear energy creates dangerous
nuclear waste which is difficult to deal with. It
must be stored in a secure location until it can be
properly dealt with.