1. ability or capacity to do work Energy is expressed in
What is Energy?
Energy is the
ability or capacity to do work
Energy is expressed in
Joules – J or kiloWattHour – kWh
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2. Energy is always conserved
What are the different forms of energy?
Energy can be in many forms
Electrical
Mechanical (motion)
Thermal (heat) ….
Energy is always conserved
Energy can neither be created not destroyed, but can be converted from one for to the other
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3. Energy sources can be broadly classified into
What are the different sources of energy?
Energy sources can be broadly classified into
Non renewable energy sources
Renewable energy sources
Non renewable sources are those which will soon get exhausted
Renewable sources are those which get replenished naturally
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Indian Institute of Science, Bangalore ;
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4. Fossilized hydrocarbons Crude oil Coal Natural gas LPG …
Examples of Non Renewable energy sources…
Fossilized hydrocarbons
Crude oil
Coal
Natural gas
LPG …
Centre for Sustainable Technologies
Indian Institute of Science, Bangalore ;
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5. Biomass Solar energy Wind energy Hydro Geothermal ….
Examples of Renewable energy sources…
Solar energy
Wind energy
Hydro
Biomass
Geothermal ….
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