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18 Cards in this Set
- Front
- Back
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A source of power that changes electrical energy into movement is called an
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electric motor
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We can make a temporary magnet by running a current through a wire that is wrapped around an iron bar. This magnet would be called an
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electormagnet
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An object that makes a current by spinning an electrical coil between the poles of a powerful magnet is called a
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generator
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An area of magnetic force around a magnet is called a
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magnetic field
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The end of a magnet is where the magnet's pull is the strongest. This end is called the
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pole
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Mary hangs two bar magnets from the side of her desk. As she watches them
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the magnets move away from each other
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ELectricity can flow through
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metal
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When you push the button on a doorbell it
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starts the electrical current
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Junkyards use big machines called cranes to move cars around. These cranes have large magnets on the end of them because
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the magnets stick to the metal in cars
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The place where a magnet's pull is the strongest is at its
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poles
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Mary makes an electromagnet. If she wraps the wire around the nail a few more times her experiment will change because
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the more paper clips and iron fillings will be attracted to the nail
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From Mary's experiment she learns that
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a strong current and adding more coils make a stronger magnet
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An area of magnetic force around a magnet is called a
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magnetic field
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A temporary magnet made when a current flows through wire wrapped around an iron bar is
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an electromagnet
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A metal that is NOT magnetic is
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aluminum
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When current travels through the second transformer before entering your house, the second transformer
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decreases the voltage
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A measure of the force of negative charges is called
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voltage
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Some sources that spin the coil of a turbine and cause gererators to work are
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wind, moving water, and steam
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