natural resources
Post on 16-May-2015
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NATURAL RESOURCES
Presented by:Jenny Raut(P.D.I.M.T.R)
&
Preeti Mahurkar(P.D.I.M.T.R)
tqma2z.blogspot.com
What are resources?
Any material which is part of earth and satisfy human need and add value is called as resource.
Example:rocks,minerals,soil,,rivers,
plants & animal. Human is a resource because developing his
skill, he can develop other resource by adding value to the physical material .
Value are of 4 kind:
Economic value- production Legal value-clean air,water(quality) Aesthetic value- beauty of
nature(forest,mountain,lake) Ethical value-responsibility to
preserve(natural parks for future)
Types Of Resources
Natural Resources
Human Resources
Man-made Resources
Natural Resource
It is the form of matter/energy which is available in the earth and get used by living thing.
Eg:air,water,soil,minerals,fossil-fuel,wildlife.
Category Of Natural Resource
Renewable
non-Renewable
Renewable Resource
These are those resources which are renewed/replenished fastly and are not affected by human activity.
Renewable energy sources are more commonly used by developed nations.
Example:solar energy, water air biomass wood
solar energy
Hybrid Of Wind And Solar energy
Biomass Energy
Non-Renewable
These are those resources which are not renewed/replenished and are affected by human activity.
Over 85% of the energy used in the world is from non-renewable supplies
Most developed nations are dependent on non-renewable energy sources such as fossil fuels (coal and oil) and nuclear power.
Industrialized societies depend on non-renewable energy sources.
Example Of Non-Renewable Resource COAL OIL NATURAL GAS OIL SHALE AND TAR SANDS NUCLEAR POWER
Coal & Energy Security
COAL
Coal is the most abundant fossil fuel in the world with an estimated reserve of one trillion metric tons.
world's coal reserves exist in Eastern Europe and Asia considerable in United States .
Coal formed slowly over millions of years from the buried remains of ancient swamp plants
Formation Of Coal
Types of coal
Coal are formed due to differences in the pressure and temperature during formation.
Lignite coal.about 50% carbon , highest water 50%,low
amounts of smog-causing sulfur. Bituminous coal about 85% carbon and 3% water Anthracite coal almost 100% carbon ,hardest form of coal.
Use Of Coal
Coal is used to produce 50% of the electricity in the United States.
used for heating and cooking in less developed countries while rural areas of developed countries.
OIL
Crude oil or liquid petroleum, is a fossil fuel that is refined into many different energy products
e.g., gasoline, diesel fuel, jet fuel, heating oil
Formation Of Oil
Oil forms underground in rock such as shale, which is rich in organic materials. Wells are drilled into these oil reservoirs to remove the gas and oil.
About 25 percent of the oil recovers during primary stage
During secondary stage hot water is injected into the reservoir around the well
This water forces the remaining oil toward the area of the well from which it can be recovered
Tertiary method is used to recover as much oil as possible. This involves pumping steam, carbon dioxide gas or nitrogen gas into the reservoir to force the remaining oil toward the well.
Availability Of Oil
50 percent of the world's oil is found in the Middle East
Additional reserves occur in North America
NATURAL GAS
Natural gas is a mixture of gases methane ethane propane butane.
It is cleanest burning fossil fuel propane and butane are removed from the
natural gas and made into liquefied petroleum gas (LPG)
Natural gas is highly flammable and is odorless
natural gas is used primarily for heating, cooking, and powering vehicles
methane
Most of the world's natural gas reserves are found in Eastern Europe and the Middle East
Supply will last an estimated 100 years.
OIL SHALE AND TAR SANDS Oil shale and tar sands are the least utilized
fossil fuel sources. Oil shale is sedimentary rock with very fine pores that contain kerogen, a carbon-based, waxy substance.
If shale is heated to 490º C, the kerogen vaporizes and can then be condensed as shale oil, a thick viscous liquid
Tar sand is a type of sedimentary rock that is impregnated with a very thick crude oil
NUCLEAR POWER
Thank You!!!!!!!!!!
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