Question

compare and contrast bio-mass and hydro electricity as source of energy

Answer 1

Hydel power:
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The rain water or river water stored in dams is made to fall from height. The falling water falls through a pipe inside a dam . The moving blades turn the generators to produce electricity. This is called Hydroelectricity, Hydroelectricity is generated from water , ie :- renewable resource.

Advantages :

» Hydroelectricity , a renewable resources , is generated by fast flowing water.

» The initial cost of setting up a plant is more and later it is economical.

» Eco - Friendly source of power.

Disadvantages :

» The initial cost of setting up a plant is very rich.

» Local communities have to be displaced.

» Submergence of the forests of the area and harms biodiversity..


Biogas :
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Shrubs, Farm wastes, Animal and human wastes are used to produce biogas for domestic consumption in rural areas. The organic waste is decomposed by bacteria in biogas digesters to emit biogas which is a mixture of methane and carbon dioxide. It produces huge amount of organic manure each year. Biogas is the most efficient use of cattle dung. It prevents the loss of tress.

Advantages :

» Bio gas plants use shrubs, farm wastes, animal waste and human waste to produce biogas in rural areas. The biogas plant provides energy and quality manure to the farmers.

» Biogas is an excellent fuel for cooking and lighting.

» It takes care of wastes and help environmental​ conservation.


Disadvantage :

» It causes greenhouse effect due to emission of gases.

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BEST OF LUCK ;-)

#akashmandal.

Answer 2

Comparison

# both are non conventional source of energy

# working cost of both sources is very low

Contrast

Biomass

# it is a renewable source of energy

# it possesses chemical energy

# it causes air pollution

# Biomass is relatively more economical source of energy

Hydroelectricity

# it is a non renewable source of energy

# it possess kinetic energy of running water at high altitude

# it does not cause air pollution

# it is costly source as compared to Biomass