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Magnetism Study Guide Test Tomorrow What materials can become magnetic? What materials can become magnetic? Iron Nickel Cobalt Neodymium What materials are NOT magnetic? What materials are NOT magnetic? Copper Aluminum Silver What is the cause of magnetic force? What is the cause of magnetic force? Domains of electrons are all lined up in the same direction and move at same speed. How do the poles react? Show where the magnets are attracted and repelled. Explain the following: • Amazing Magnet Bar Magnet Magnetic Field Magnetic Field of 2 magnets attracting Magnetic Field of 2 magnets repelling Where are magnetic fields strongest? Strongest Force at Magnetic Poles What happens if a magnet is cut apart? Magnets break apart to make smaller magnets What is the relationship between magnetic field and magnetic force? The bigger the field, the ______________the force. The bigger the field, the stronger the force. Do all magnets have the same magnetic field? How is the Earth like a magnet? 1.Which magnetic pole is closest to the geographic North Pole? 2.Is the magnetic field stronger near the middle of the Earth (Mexico) or at the bottom of the Earth (Antarctica)? Explain. How is the Earth like a magnet? 1.Which magnetic pole is closest to the geographic North Pole? South magnetic 1.Is the magnetic field stronger near the middle of the Earth (Mexico) or at the bottom of the Earth (Antarctica)? Explain. How are auroras created? 5 Facts on the Auroras Earth’s Magnetic Field protects us from solar radiation. What happens to make a temporary magnet? A magnet has to align all the electron domains in the iron nail so that the iron nail turns into a magnet. 2 ways to make temporary magnets 1) Use another magnet 2) Use electricity Possible? Could a person become magnetic? The girl with magnetic hands Tuesday, September 14th, 2010 A Serbian schoolgirl has amazed medics with her astonishing magnetic hands. Ten-year-old Jelena Momcilov has been picking up cutlery, coins and even metal furniture by just touching them at her family home in Zeljusa, since she first discovered her powers five years ago. Now experts at nearby Nis University have urged scientists to investigate, reports CEN. “I’d say this is a kind of unknown bio-magnetism. More experts would need to join me and research what this is all about,” said department head Pavle Premovic.