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27 Cards in this Set
- Front
- Back
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What is an object that attracts certain materials, mainly iron and steel
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a magnet
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what are the two kinds of magnets
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permanent and temporary
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how can you magnetize a nail
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rubbing it with a permanet magnet in the same direction everytime
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what pole always points toward the north
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north pole
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what pole always points toward the south
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south pole
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what will the unlike poles do if they are close to each other
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attract
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what will the like poles do if they are close
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repel
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what is the area called around a magnet where magnetic force acts
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magnetic field
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what does a compass dectect (point towards)
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magnetic north
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what device containes a magnetized needle that moves freely and is used to show direction
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compass
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what is earth and why
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a magnet because it has a magnetic field
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a compass will always point to what
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magnetic north
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what electricity is the build up of electric charges on a substance
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static electricity
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what do you call it if a object has the same amount of positive and negative charges
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neutral
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what charge can move from one matrieal from another
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negative
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what current is a continues flow of negative charges
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electric current
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what circut is a circular path through which electrcity can flow
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electrical circut
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what device opens or closes a circut
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switch
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if the circut is open the light will be what
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off
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if the circut is closed the light will be what
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on
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copper wire is a --------------,which allows electricity to pass through it easily
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conductor
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rubber and plastic are -----------,which do not allow eletricity flow through them
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insulators
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a ----- -------- is one that has a singal path for electric current to flow . if one lightbulb burns out , the other one in the circuit will not work
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series circuit
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a ---- ----- is one that has more than one path for an electric current to flow
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parallel circuit
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an ----------------------------------- is a magnet made when electric charges move through a coil wire wrapped around an iron rod
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electromagnets
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The magnet is the strongest at what?
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poles
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What current is continous flow of negative electric charges along one path?
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electric current
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