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ch2 Electromagnetism

Shows how electricity and magnetism are related to each other

magnet material that attracts iron
magnetic pole one of two points such as the ends of a magnet that have opposite magnetic properties
magnetic force the force of attraction or repulsion created by moving or spinning electric charges
atoms a very small building blocks of matter
domains small sections of atoms that are lined up to make a magnetic field
ferromagnets magnets made or iron, cobalt, and nickel
temporary magnets easy to magnetize, but doesn't stay magnetized for long
permanent magnets difficult to magnetize, but remain magnetized for longer amounts of time
Earth's core the area of the earth with moving iron that creates our magnetic field...not every planet has this
aurora a curtain of lights which result from solar wind burning up in the atmosphere at the poles
electromagnetism interaction of electricity and magnetism
solenoid a coil of wire with an electric current running through it...creates a magnetic field
electromagnet a solenoid with a iron core...strong magnetic field
electric motor changes electrical energy to mechanical energy (it can do work)
electric generator changes mechanical energy (work of machines) to electrical energy
electromagnetic induction creating electrical current by moving a magnetic field past a coil of wires
Hans Christian Oersted (1820) discovered that moving charges (electricity) can create magnetic fields
how to strengthen electromagnets More loops of wire - More electricity - More metal in the core of the solonoid
types of turbines wind - water - geothermal - nuclear ----- all of them turn to generate electricity by passing magnets by wires to move electrons
north geographic pole ("top" of the Earth) south magnetic pole
Michael Faraday (1831) discovered that changing magnetic fields (moving magnets) make electrons flow in wires (electricity)
types of magnets ferromagnets, electromagnets, permanent, temporary
how to "mess up" a magnet store it with other magnets in a disorderly way - extreme heat - dropping it - hitting it
how to create a magnet rub a magnet against the iron, nickel, or cobalt to line up the atoms into organized domains....get the atoms to line up
electrons particles in the outside area of the atom.....when they move and go from atom to atom we call it "electricity"
Created by: browngdavid