Let's learn about "Energy In Day ToDay Life."

1. ENERGY IN DAY TO
DAY LIFE
Grade 9 Science
7/15/2015 Thinel Sahansa
Jayawardana

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Energy is the ability to do Work
OR produce a change in Matter.

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Energy is measured
in Joules (J)

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We get the energy
for our body
movements from
foods

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Given below are the Sources of
energy used for different
purposes

6. Sun
7/15/2015 Thinel Sahansa Jayawardana
SUN is the main natural
source of Energy.
It gives us Light and
Heat energy.
Energy from the SUN is
known as SOLAR Energy.

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Solar Energy is used for various
purposes.
Some of them are,
to genarate Electricity
To get Hot water for bathing
to Cook

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To generate Electricity – Solar
Panels are used
Street Lights
For houses
Calculator
Solar Panels

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Solar cookers

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Solar Heaters
Solar heaters are used for
heating water.

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BIO MASS
Plant or Animal material which can
be used as fuel , are known as
BIO MASS

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Fire wood is used for
cooking purposes and
burning of bricks.

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Saw dust is used
in saw dust stove.

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BIO GAS
WE can produce BIO GAS using
kitchen wastes
and animal waste matter

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Energy running water
When water is stored in a tank
[reservoir] it has potential energy .
This potential energy of water can
be use to produce ELECTRYCITY .
In hydro power stations like
Lakshapana , electricity is produced
by the potential energy of water .

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Model of a Hydroelectric Power station

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Energy conversion in hydroelectric
power station
resevoir Running water generator
Potenial
energy
Kinetic
energy
Electric
energy

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Types of fossil fuels
Coal
Petroleum oil
Crude oil
Natural gas

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Jayawardana
Thank you
THE END