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weSANKAR &
REJI
HOW DOES ENERGY HOW DOES ENERGY INFLUENCE OUR LIFE ?INFLUENCE OUR LIFE ?
What are different types of electricity ?
Why do we afraid of lightning ?
What is the need of earthing ?
Static electricity is produced by the friction of suitable materials
The material which loose electrons gets positive charge and the other gets negative charge.
STATIC ELECTRICITY
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WHY DO MATERIALS ATTRACT TOWARDS A CHARGED SUBSTANCE ? When a charged
substance bring towards another material there will be a rearrangement of electrons in itself.
Meterials used for rubbing Nature of attraction
1 2 Attracting Not attracting
Silk Glass
Silk Ebonite
Polyester Glass
Polyester Rubber
SELECT THE RIGHT BUTTON
Like charges repel
Unlike charges attract
DISTRIBUTION OF CHARGES IN CONDUCTORS
ELECTROSCOPE
EARTH IS AN ELECTRON BANK
LIGHTNING
The electric discharge between the clouds in the atmosphere
LIGHTNING CONDUCTOR
Lightning conductor is a device which protects buildings from the damage that may be caused by lightning
NEED OF EARTHING
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THE MAGICIAN WHO SEIZED LIGHTNING
•Benjamin Franklin
PRECAUTIONS FROM LIGHTNING
1. Do not take shelter near a tall tree or lone tree.
2. Do not stand or walk along plain ground
3. It is better to lie flat on the ground4. Never keep touching metallic parts5. Do not use electrical appliances
YOU ARE RIGHT
SORRY YOU ARE WRONG
RESOURCES
Encarta cd
VIII Standard Text book
+2 physics Text book