This document discusses various alternative sources of energy that can be used instead of non-renewable energy sources. It defines alternative energy as sources that can be sustained for future generations. Some key alternative energy sources mentioned are solar energy, which is collected from sunlight; wind energy, which uses turbines to convert wind power to electricity; hydro energy, which uses water power from dams; biomass energy, from organic waste; and geothermal energy, which taps into heat from within the earth. Brief descriptions are provided for each energy source and how it can be harnessed as a renewable alternative to fossil fuels.

1. Alternative
Sources of
Energy

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3. Defining Alternative sources of Energy
 Alternative sources of energy are those
sources of energy which are used to save
and conserve natural resources for the
next generation.
For Example-Solar Energy, Hydro Energy etc.

4. Some Types of Alternative
Sources of Energy
 Solar Energy
 Wind Energy
 Biomass
 Hydro Energy
 Geothermal Energy
 Nuclear Energy

5. Solar Energy
 Solar energy is energy that is present
in sunlight. It has been used for thousands of
years in many different ways by people all
over the world. As well as its traditional human
uses in heating, cooking, and drying, it is used
today to make electricity where other power
supplies are absent, such as in remote places
and in space.
 It is becoming cheaper to make electricity
from solar energy and in many situations it is
now competitive with energy from coal or oil.

6. Wind Energy
 Wind is a clean, renewable resource that
is good for the environment. Wind
machines, called turbines, create energy
without burning fuel, so it makes for a
pollution-free alternative to oil. Turbines
are used today mostly to generate
electricity.

7. Hydro Energy
 Hydroelectricity is electricity that is made
by the movement of water. It is usually
made with dams that block a river or
collect water that is pumped there. When
the water is "let go" the huge pressure
behind the dam forces the water
down shafts that lead to a turbine, this
causes the turbine to turn, and electricity
is produced.

8. Biomass Energy
 Biomass is a clean renewable energy
resource derived from the waste of
various human and natural activities.
It excludes organic material which
has been transformed by geological
processes into substances such as
coal or petroleum.
 Nowadays biodiesel is being used to
run vehicles. This is derived from
different plants like corn.

9. Nuclear Energy
 Nuclear power is an alternative power
source that uses the nuclear fission of
uranium to create heat and, thereby,
through a heat transfer mechanism and
turbines, create electricity.

10. Tidal Energy
 Tidal Power is the generation of
electrical power through the
harnessing of the retreat and
flow of the tides

11. Geothermal Energy
 "Geo" means "from the earth," and "thermal"
means "heat," so this type of energy is found
under the earth. The hot lava from a volcano
and the hot steam from a geyser both come
from underground heat - and we can use that
same type of heat in our homes.

12. Thank You
Adit ,Class V,Scottish High
Gurgaon