A presetation about alternative sources of energy.

1. A presentation
about:
Alternative sources of energy

2. Nowadays,there are so many different
sources of energy.The most well-known
ones are:
Nuclear energy
Natural gas
Solar power
Wind power energy
Biomass

3. Nuclear energy
Nuclear energy is the use of exothermic
nuclear processes to generate heat and
electricity.It is also a low carbon power
generation method of producing
electricity.

4. Nuclear energy has disadvantages:
It is a chemical weapon(bomb in Hiroshima-
Nagashaki)
Nuclear power plant accidents(Chernobil
and Fukushima disaster)
High cost:it needs a lot of investment to set
up a nuclear power station
Non Renewable:This energy uses uranium
which is rare to be found in many countries.

5. Natural gas
Natural gas is a fossil fuel formed when layers
of buried plants and animals are exposed to
intense heat and pressure over thousands of
years.The energy that the plants originally
obtained from the sun is stored in the form of
carbon in natural gas.

6. Natural gas has also disadvantages:
It creates greenhouse gas emissions
It is renewable:but some people call it non-renewable
because it needs thousands of
years to start forming under the ground
again
It is highly volatile and can be dangerous

7. Solar power
Solar power is the conversion of the energy
from the sun to usable electricity.The most
common source of solar power is photovoltaic
cells which convert sunlight into
electricity.It is renewable and it is not only
used to generate electricity but also to heat
water(solar water heaters)

8. Some disadvantages of solar power
It cannot be created during the night
It is also reduced during times of cloud
cover(although energy is still produces
in a cloudy day)
Solar panels are expensive

9. Wind power energy
Wind power is the conversion of wind into
electricity.The most common form of wind
power generation uses wind turbines which
can be built at varying sizes to create
varying amounts of electricity.It is a
completely clean energy source,the
turbines can be placed everywhere.

10. Wind power disadvantages:
Like many alternative energies,wind power
is not always generated
Wind turbines are very noisy

11. Biomass
Biomass is a biological material derived
from living or recently living organisms.It
most often refers to plants or plant-derived
materials.Biomass creates no
harmful carbon dioxide emissions and it is
a clean energy and renewable.It also
reduces landfills and can be used to
create different products.

12. Disadvantages of biomass:
It is expensive
And harmful to the environment
It consumes more fuel
Requires more land(so biomass products can
be burnt)

13. So those are the most well-known
energy resources.Some of them
have loads of disadvantages and
some more advantages.The most
of them produce fossil fuels so
they participate in global
warming.The “cleanest”one is wind
power and it does not take part in
global warming.