Magnetism Assessment
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magnets have a magnetic field that exerts a magnetic force.all magnets have a north and a south poleif you cut a magnet into pieces, each one becomes a small two-pole magnetlike poles (or charges) attract each other, opposite poles repel each otherthe orientation of the domains (clusters of electrons) in a magnet are in the same directionmagnetic field is strongest at the polesmagenetic field extends in a curved path from one pole towards the otherflowing electricity creates a magnetic fielda coil of wire (around iron) creates a stronger electromagnetreversing the flow of electricity reverses the poles solenoid is a sequence of spaced out loops that create a linear magnetic fieldiron, nickel, and cobalt are the only magnetic metalsmagentic fields are 3dthe Earth is a big magnet because of it's moving molten core of ironthe strenght of the Earth's magnet field becomes stonger towards the coreblood has iron in itmagnet strength is determined by size, temp, and materialmotors involve electricity and magnetismdiagram or description about how a motor worksmany devices use motors and/or magnets (speakers, appliances, MRI, mag-lev trains, etc)iron filings or a compass (or similar) can be used to show the magnitic field (otherwise it is invisible)magnetism can be used to create electricity.some planets have a magnetic field (due to core composition) and others dontyou can make a magnet by rubbing a magnetic material with another magnet to allign the domainsauroras are the lights in the atmosphere near the poles, where field is strongestmagnetism can go through things (paper, etc)Total
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