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| the force of attraction or repulsion of magnetic materials |
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| the ends of a magnetic object, where the magnetic force is strongest |
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| the region around a magnet where the magnetic force is exerted |
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| lines that map out the magnetic field around a magnet |
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| the smallest particle of an element that has the properties of that element |
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| a substance in which all the atoms are alike; one of about 100 basic materials that make up all matter |
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| the core at the center of every atom |
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| a positively charged particle that is part of an atom's nucleus |
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| a negatively charged particle that orbits the nucleus of an atom |
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| a region in which the magnetic fields of all atoms are lined up in the same direction |
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| a material that is strongly attracted to a magnet and which can be made into a magnet |
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| a magnet made of material that keeps its magnetism |
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| a device with a magnetized needle that can spin freely; a needle on this always points north |
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| the angle between geographic north and the north to which a compass needle points |
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| two donut-shaped regions 1000-25,000 km above Earth that contain electrons and protons traveling at high speeds |
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| a complete path through which electric charges can flow |
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| streams of electrically charged particles flowing at high speeds from the sun; this pushes against Earth's magnetic field and surrounds it |
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| the region of Earth's magnetic field confined by the solar wind |
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| a glowing region produced by the interaction of charged particles from the sun and atoms in the atmosphere |
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| a property of electrons and protons; electrons carry a negative charge, and protons carry a positive charge |
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| the flow of electric charges through a material |
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| a material through which electron move freely, forming and electric current |
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| a material through which the charges of an electric current are not able to move |
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| a device in an electric circuit that uses electrical energy as it interferes with the flow of electric charge |
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| the opposition to the movement of electric charges flowing through a material |
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| a material that has no electrical resistance |
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| a current-carrying coil of wire with many loops that acts as a magnet |
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| a strong magnet that can be turned on and off; a solenoid with a ferromagnetic core |
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