Electricity Chapt. 11 L.7
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Electricity | form of energy called electrical energy. It comes from electrical charges from matter.
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| Matter | is made up of atoms
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| Repel | pushes apart. Any two objects with the same kind of charge.
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| Attract | move together. Any two objects with opposite charges.
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| Neutral | Objects that will attract either positive or negitive charges
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| Static electricity | is an electric charge that builds up on the surfact of an object. It can be either positive or negitive depending on the loss or gain of electrons.
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| Electric discharges | the movement of extra electrons from one object to another. Lightning is a huge electric discharge.
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| Electric current | the continous movement of electrons (don't stop)
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| Electrical circut | a "path" on which electrons move continously.
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| Conductor | a material which electrons move easily. copper is one of the best conductors.
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| Insulator | a material which electrons do not move easily. Rubber and Plastic are good examples.
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| Filament | a thin wire inside the glass bulb of a light bulb. It is made up of tongsten which is a conductor that throws off heat and light. It is very strong not to break or melt.
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| Open circut | break in the circut so electrons can't move.
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| Closed circut | no break in the circut and electrons can move.
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| tongsten | a conductor that throws off heat and light. It is very strong not to break or melt. Used to make the wire in a light bulb.
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| An example of a good conductor | Copper
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| An example of a good insulator | Rubber and Plastic
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| An example of a huge electric discharge | Lightning.
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