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Magnetism Flashcards

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793288509MagnetCan create magnetic effects by himself.
793288510Magnetic PolesNorth and South
793288511North and South ________Attract
793288512South and South _______Repel
793288513North and North_______Repel
793288514Magnetic FieldHas a quantity in all points in space.
793288515Source MagnetMagnet that creates a field.
793288516Magnetic Field Lines-Point in the direction of the force on an imaginary north pole test magnet. -Always point away from north pole and towards south pole.
793288517ElectromagnetsMagnets created by electric flow in wires.
793288518Right Hand RuleWay to find magnetic poles.
793288519Each electron in an atom behaves like a _______small loop of current forming it's own miniature electromagnet.
793288520DiamagneticMagnetic fields in the electrons cancel each other out. ex. Lead and Diamonds
793288521ParameticElectrons don't cancel each other out completely, so even (ex) aluminum can have north and south poles.
793288522SolenoidName of a coil of wire you can run electricity through.
793288523True/False: All metals are magnetic.False
793288524Give two ways you can increase the power of an electromagnet.-More Batteries -Add an Iron Core -More Coils (ask)
793288525What is the only thing you need to create an electromagnet?Wire
793288526Earth is what kind of magnet?Bar
793288527The North magnetic pole is near the geographic _____ pole.South
793288528The south magnetic pole is near the geographic _______ pole.North
793288529Magnetic DeclinationMagnetic Poles move a little every year.
793288530The needle in a compass actually points ______.to the south magnetic pole, but is painted red and called north.
793288531True/False: The more north you get, the more accurate your compass gets.False
793288532The "Magnetic Ridge" is between what two countries?USA and UK
793288533The newest samples of molten rock from the Magnetic Ridge is found where?Closest to the magnetic ridge.
793288534Earths Magnetic Field gets weaker by ______ each year.7%
793288535What power sources use Electromagnetic Induction?Hydroelectric, Wind....
793288536Electromagnetic InductionYou can cause electrons to move through the wire by pushing a bar magnet in and out of the coil, which forces the electric current through the wire.
793288537Alternating Current (AC Current)Alternates 60 times per second because the turbine spins 60 times per second.
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