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gr 7 energy transformation
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Energy is neither created nor destroyed but it changed from one form to another
Law of conservation of energy
. It is composed of an acid solution with two different metals dipped in.
simple electric cell
Electromagnetic pollution causing heart diseases
The webs of wireless transmitters of cellular phones
Pollution of (air - water – soil ) So it causes ( cancer- food poisoning )
chemical pesticide
A cellular phone
Electric energy into light and sound energy.
Alarm clock
- Chemical energy into kinetic and sound energy.
Television
Electric energy into light and sound energy.
Solar cell
Solar energy into electric energy.
Sewing machine
Electric energy into mechanical energy.
car air conditioner
Electric energy into heat energy.
car radio
Electric energy into sound energy.
car lamps
Electric energy into light energy.
car dynamo
Mechanical energy into electric energy.
car engine
Chemical energy into heat energy
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