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26 Cards in this Set
- Front
- Back
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Amps |
unit used for the amount of current flowing through a circuit per unit of time |
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Atoms |
smallest particles of an element |
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attract |
pull toward |
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aurora |
bands of light at the Earth's poles caused by charged solar particles following the earth's magnetic field lines |
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circuit |
made of a device run by an energy source and wires carrying an electric current |
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conductor |
materials that allow an electric current to move freely through them |
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electric current |
flow of charges through a material; movement of electrons through a conductor |
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electric field |
force that surrounds a charge |
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electromagnet |
strong magnet that can be turned on and off; A coil of current-carrying wire with an iron core |
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Electron |
tiny, negatively-charged particle that moves around the nucleus of the atom |
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insulator |
material in which charges are not able to move freely |
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magnetic domain |
a cluster of billions of atoms that all have magnetic fields that are lined up in the same way |
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magnetic field |
forces exerted around a magnet |
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magnetic pole |
area of a magnet where the force is strongest |
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magnetosphere |
the region of Earth's magnetic field influenced by the solar wind |
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Neutron |
small particle in the nucleus of the atom with no electrical charge |
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parallel circuit |
circuit that has more than one path for current to flow |
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Proton |
small, positively-charged particle in the nucleus of the atom |
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repel |
push away |
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resistor |
resists or goes against the flow of electrical charges |
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series circuit |
circuit that has only one path for electrons to take |
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solenoid |
current-carrying coil of wire with many loops |
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static discharge |
the release of static electricity when charged objects come into contact |
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static electricity |
the build-up of charges on an object caused by the transfer of electrons |
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voltage source |
supplies the energy needed to keep electrons flowing in an electric current |
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Volts |
unit used for the amount of force in an electric current |
