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GREENHOUSE EFFECT

What is greenhouse effect?:

What is greenhouse effect? The greenhouse effect refers to circumstances where the short wavelengths of visible light from the sun pass through a transparent medium and are absorbed. The trapping of the long wavelength radiation leads to more heating and a higher resultant temperature.

Slide3:

T he greenhouse effect has been widely used to describe the trapping of excess heat by the rising concentration of carbon dioxide in the atmosphere. The carbon dioxide strongly absorbs infrared and does not allow as much of it to escape into space

Contributers to greenhouse effect:

Contributers to greenhouse effect Those gas molecules in the Earth's atmosphere with three or more atoms are called "greenhouse gases" T hey can capture outgoing infrared energy from the Earth, thereby warming the planet. The greenhouse gases include -water vapor (H 2 O) -ozone (O 3 ) -carbon dioxide (CO 2 ) -methane ( CH 4 ) - chloro - fluoro -carbons (CFC's )

Causes of the Greenhouse Effect :

Causes of the Greenhouse Effect

1.Burning of fossil fuels:

1.Burning of fossil fuels Fossil fuels like coal, oil and natural gas have become an integral part of our life . They are used on large basis to produce electricity and for transportation. When they are burnt, the carbon stored inside them is released which combines with oxygen in the air to create carbon dioxide.

2.Deforestation:

2.Deforestation Forests hold a major green area on the planet Earth. Plants and trees intake carbon dioxide and release oxygen. When the wood is burnt, the stored carbon in the trees converted back into carbon dioxide.

3.Increase in population:

3.Increase in population Over the last few decades, there have been huge imcrease in the population. Now , this has resulted in increased demand for food, cloth and shelter. New manufacturing hubs have come up cities and towns that release some harmful gases into the atmosphere.

4.Farming:

4.Farming Nitrous oxide is one the greenhouse gas that is used in fertilizer and contributes to greenhouse effect.

5.Industrial Waste and Landfills:

5.Industrial Waste and Landfills Industries which are involved in cement production, fertilizers, coal mining activities, oil extraction produce harmful greenhouse gases. Also , landfills filled with garbage produce carbon dioxide and methane gas contributing significantly to greenhouse effect.

REFERENCES::

REFERENCES: http://hyperphysics.phyastr.gsu.edu/hbase/thermo/grnhse.html http ://www.conserve-energy-future.com/GreenhouseEffectCauses.php

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