energy in day today life
TRANSCRIPT
Thinel Sahansa Jayawardana
ENERGY IN DAY TO DAY LIFE
Grade 9 Science
05/01/2023
05/01/2023 Thinel Sahansa Jayawardana
Energy is the ability to do Work OR produce a change in Matter.
What is Energy ?
05/01/2023 Thinel Sahansa Jayawardana
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
05/01/2023 Thinel Sahansa Jayawardana
Sun
SUN is the main natural source of Energy.
It gives us Light and Heat energy.
Energy from the SUN is known as SOLAR Energy.
05/01/2023 Thinel Sahansa Jayawardana
05/01/2023 Thinel Sahansa Jayawardana
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 HeatersSolar 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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05/01/2023 Thinel Sahansa Jayawardana
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
Potenialenergy
Kineticenergy
Electric energy
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Types of fossil fuelsCoal
Petroleum oil
Crude oil
Natural gas
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Thank you
THE END