This Presentation Is About The Sources Of Energy

1. Done By :
Sameeullah
IX - B

2.  Sources Of Energy
 Renewable Resources
 Renewable Resources Information :
1) Solar Energy
2) Wind Power
3) Hydro Power
4) Geothermal Power
 Non-Renewable Resources :
1) Coal
2) Petroleum
3) Natural Gas
4) Nuclear Power
 Teacher’s Remarks

6. CAN BE REGENERATED IN A SHORT AMOUNT OF TIME OR IS BASICALLY
UNLIMITED
Types Of Renewable Resources
Solar
Wind Power
Hydrogen and fuel cells
Geothermal power

7. Solar energy is the most abundant and easily available renewable resource.
The solar energy not used by man is used by plants and other organisms
in photosynthesis.
The Sun delivers more than 10,000 times the energy that humans currently use, and
almost twice the amount of energy that will ever be obtained from all of the planet's
non-renewable resources.

9. Wind power is the conversion of wind energy into a useful form of energy.
Most modern electrical wind power is generated by converting the rotation of turbine
blades into electrical currents by means of an electrical generator.
Windmills provide mechanical power, and were originally developed for milling
grain for food production.
The basic technique adopted in the blades of windmill to facilitate proper rotation is
the pressure difference among the blades.
Other industrial uses of windmill machinery are wind pumps , used for water
pumping or drainage.
Wind power is also used to propel ships using sails.

11. Hydropower is energy derived from the movement of water in rivers and oceans,
originally used for irrigation and the operation of various mechanical devices.
 Since the early 20th century, the term is used almost exclusively in conjunction with
the modern development of hydro-electric power .
Conventional hydroelectric power involves creating a dam , and using the resulting
water force to turn a water turbine and generator.
Other electricity generating methods are run-of-the-river hydroelectricity , which
captures the kinetic energy in rivers or streams, without the use of dams,
and pumped-storage hydroelectricity , which stores water pumped during periods of
low demand to be released for generation when demand is high.

13. Geothermal energy comes from the Earth's crust and originates from the original
formation of the planet (20%) and from radioactive decay of minerals (80%).
The available energy from the Earth's crust and mantle is approximately equal to that of
incoming solar energy.
Geothermal heating is the direct use of geothermal energy for heating applications.
Geothermal electricity is electricity generated from geothermal energy using
technologies like super heaters , flash steam power plants and binary cycle power plants.

15. A bio fuel is a type of fuel whose energy is derived from biological carbon fixation.
Bio fuels include fuels derived from biomass conversion , as well as solid
biomass, liquid fuels and various biogases.
Bio ethanol is an alcohol made by fermentation , mostly from carbohydrates produced
in sugar or starch crops such as corn, sugarcane or switch grass.
Biodiesel is made from vegetable oils and animal fats.
Biodiesel is produced from oils or fats using transesterification and is the most
common bio fuel in Europe.
Biogas is methane produced by the process of anaerobic digestion of organic
material by anaerobes., etc. is also a renewable source of energy.

18. CAN’T BE REPLACED IN A SHORT AMOUNT OF TIME AND IS LIMITED.
A non-renewable resource (also called a finite resource) is a resource that does not
renew itself at a sufficient rate for sustainable economic extraction in meaningful
human time-frames.
Types Of Non Renewable Resources
I) Earth Minerals And Ores
II) Fossil Fuels
III) Radio Active Fuel

19. Coal is also composed of organic matter --- matter that decomposed in peat bogs,
which then formed into carbon rock under immense pressure.
Coal is generally highly combustible and the world's most-used resource for electrical
generation.
However, burning coal releases massive amounts of carbon dioxide into the
atmosphere, which is the primary factor in the greenhouse effect.
In addition to being greenhouse gas source, coal cannot be reproduced.

21. Petroleum is extracted and turned into a variety of fuel sources including petrol or
gasoline, diesel, propane, jet fuel, heating oil and paraffin wax.
 Also known as crude oil, this fuel source is non renewable.
Petroleum is made when organic matter settles in water that has lost its dissolved
oxygen and is then compressed under immense heat and pressure for millions of
years.
 There is no way for humans to reproduce this process for mass production either in
nature or in a lab, so once mankind has used the current supply of petroleum, more
will not be available for many centuries.

23. Also a byproduct of decomposition, natural gas is mostly methane created as organic
matter decays.
 Once extracted, natural gas is processed to remove everything but the methane.
This produces a variety of other natural gases, such as ethane, propane and butane,
which are also used as fuels.
These natural gases are used to heat homes and businesses and fuel stoves.
 While it is a fairly clean-burning fossil fuel, it is a non renewable energy source
because
it is a byproduct of thousands of years of decomposition within the earth's crust

25. Nuclear energy may get mentioned in the same breath with renewable power source
like wind and solar because it is clean-burning and therefore more environmentally
sound than oil or coal.
But nuclear energy is, in fact, a nonrenewable resource.
The problem lies in the element that enables nuclear power: uranium.
 The element uranium is abundant, but only a certain type of uranium, U-235, is used
to fuel nuclear power.
U-235 must be extracted from mined and processed uranium. The processing
produces only small amounts of U-235, making it rare and expensive.
Man cannot reproduce this element; we have a limited natural supply.