unit 4 electromagnetism
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105 Terms
magnetism is a….
fundamental force in nature that gives some forms of matter the ability to attract other forms of matter (such as iron)
matter that has the ability to attract other forms of matter is said to be…
magnetic
magnets are materials that…
have magnetic properties
the word magnet is derived from the greek name…
magnetis lithos
in 1600, english scientist william gilbert confirmed earlier observations regarding magnetic poles and concluded that earth was a…
magnetic
any charged particle in motion (e.g., electron) will create a…
magnetic force field around it
the magnetic force field around a charged particle in motion is _________ to the motion of the particle
perpendicular
the intensity of magnetic fields are represented by…
imaginary lines
orbital magnetic moments are created when…
electrons orbit the nucleus in a closed loop
spin magnetic moments are created when…
electrons spin on their axes (protons in the nucleus also exhibit this property, basis of MRI)
atoms are technically small ______ due to magnetic fields created by spinning protons & electrons in motion
magnets
magnetic dipole is the…
small magnetic created by an electron in orbit
groups of many atoms with their dipoles aligned create a…
magnetic domain
with most materials in their natural state, magnetic dipoles of atoms are…
not aligned and are randomly distributed throughout
Note 
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