Unit 1 part 1
Energy notes
Introduction and definition
1. Energy is defined as the ability to do work
2. Amount of energy possessed by a body is equal to amount of work
done
3. Standard Measuring unit of energy is joules and commercial
measuring unit is kilowatt hour
4. A good source of energy should be safe and convenient, easy to
transport and easy to store
Characteristics of good fuel
1. It should have high calorific value
2. It should not produce harmful gases
3. It should be cheap in cost and easily available
4. It should be convenient to handle
5. It should burn smoothly
Classification of sources of energy
basis Renewable Nonrenewable
sources sources
define Renewable These sources of
sources of energy energy are
are those which exhaustible and it
are inexhaustible. takes thousands
They can be and millions of
replaced and years to get
replenished replenished
, nature Present in Present in limited
unlimited amount amount
examples Solar energy, wind Coal, petrol, oil
energy, water and natural gas
energy,
geothermal
energy, biomass
energy and ocean
energy
Effect on It is not harmful They are harmful
environment for the nature
characteristics These are freely They are fast
available in nature depleting, difficult
and does not to discover and
cause pollution causes pollution
basis Conventional Non-conventional
sources of energy sources of energy
Define The sources of The sources of
energy that are energy that are
used from a long started using
period of time recently
nature Nonrenewable in Renewable in
nature nature
quantity They are limited They are abundant
Cost They are expensive They are cheaper
example Coal and oil Solar energy, wind
energy etc
Sources of energy
1. Wind energy
2. Fossil fuels
3. Solar energy
Energy notes
Introduction and definition
1. Energy is defined as the ability to do work
2. Amount of energy possessed by a body is equal to amount of work
done
3. Standard Measuring unit of energy is joules and commercial
measuring unit is kilowatt hour
4. A good source of energy should be safe and convenient, easy to
transport and easy to store
Characteristics of good fuel
1. It should have high calorific value
2. It should not produce harmful gases
3. It should be cheap in cost and easily available
4. It should be convenient to handle
5. It should burn smoothly
Classification of sources of energy
basis Renewable Nonrenewable
sources sources
define Renewable These sources of
sources of energy energy are
are those which exhaustible and it
are inexhaustible. takes thousands
They can be and millions of
replaced and years to get
replenished replenished
, nature Present in Present in limited
unlimited amount amount
examples Solar energy, wind Coal, petrol, oil
energy, water and natural gas
energy,
geothermal
energy, biomass
energy and ocean
energy
Effect on It is not harmful They are harmful
environment for the nature
characteristics These are freely They are fast
available in nature depleting, difficult
and does not to discover and
cause pollution causes pollution
basis Conventional Non-conventional
sources of energy sources of energy
Define The sources of The sources of
energy that are energy that are
used from a long started using
period of time recently
nature Nonrenewable in Renewable in
nature nature
quantity They are limited They are abundant
Cost They are expensive They are cheaper
example Coal and oil Solar energy, wind
energy etc
Sources of energy
1. Wind energy
2. Fossil fuels
3. Solar energy
