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ELECTRICITY and MAGNESTISM
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Electricity = movement of electrons from one place
to another. Remember:: structure of atom atomic particles and charges attraction and repulsion of particles metals and nonmetals ions
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Two types of electricity:
a. static electricity: temporary flow of electrons lightning
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b.Current electricity: continuous flow of electrons
household electricity
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Static electricity caused by: friction-electrons are physically
removed from objects, either by contact or temperature s. Equal negative and positive charges = neutral.
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Electrons stay on balloon because they are attracted by
As balloon is rubbed against the hair, electrons are pulled off the hair and cling to balloon. Electrons stay on balloon because they are attracted by the ……. in the balloon. e e e e e e e e e
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Balloon sticks to wall because of opposite attraction.
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Remember – electrons are bundles of energy AND can be seen if it
Remember – electrons are bundles of energy AND can be seen if it is released. Therefore, if electrons are released we should see energy in the form of light, we should hear it in the form of a pop, and we might even feel it as heat – all forms of energy. e e
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a tree it spontaneously turns the water inside the tree to water vapor
The energy produced by a lightning bolt has the ability to increase the temperature of the surrounding air by 50,000 F. The surface of the sun is estimated to be about 10,000 F. When lightning hits a tree it spontaneously turns the water inside the tree to water vapor causing the tree to explode as a result of the added pressure.
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Current electricity – the flow of electrons from a source to
a resistance. Electrons must flow along a specific closed pathway – circuit. Source – reactor generator battery dry or wet Resistance whatever causes the electrons to move
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Circuits: series – only one path for the flow of electrons.
resistors share electrons. one resistor goes out they all go out. e e e e e
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e e e e e
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Parallel circuits-- multiple pathways for electrons to flow
each resistor has its own supply of electrons if one goes out the others remain operable. e e e e e
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Parallel circuits-- multiple pathways for electrons to flow
each resistor has its own supply of electrons if one goes out the others remain operable. e e e e e
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