MAGNETISM MAGNETIC FORCE THE FORCE MAGNETS EXERT OVER
- Slides: 12
MAGNETISM
MAGNETIC FORCE THE FORCE MAGNETS EXERT OVER A REGION CALLED THE MAGNETIC FIELD STRENGTH DEPENDS UPON MAGNET TYPE AND HOW MUCH IT IS MAGNETIZED WEAKENS RESULTS WITH DISTANCE IN OPPOSITE QUALITIES ON ENDS CALLED POLES OPPOSITE (SEE POLES ATTRACT LIKE POLES REPEL NEXT SLIDE AND DRAW)
MAGNETIC FIELD LINES CAN SHOW STRENGTH OF FORCE FORM CLOSED LOOPS FROM ONE POLE TO THE NEXT CLOSE LINES SHOW STRONGER FORCE (NEAR POLES)
PERMANENET MAGNETS CAN BE MAGNETIC ALL OF THE TIME CAN MAGNETIZE OTHER PIECES OF IRON BY TOUCHING THEM SOFT MAGNETS – MADE OF IRON, EASY TO MAGNETIZE, LOSE MAGNETISM EASILY HARD MAGNETS – MADE OF COBALT AND NICKEL (ALNICO), HARD TO MAGNETIZE, MAKE STRONG, LONG LASTING MAGNETS LOADSTONE – NATURAL MAGNETS MADE OF A MINERAL CALLED MAGNETITE
WHAT CAUSES THIS MAGNETISM MOVEMENT REGIONS OF CHARGES (ELECTRONS) CALLED DOMAINS HAVE SIMILAR ELECTRON SPIN IN A MAGNET, DOMAINS CAN BE ALIGNED WITH OTHER DOMAINS DON’T DROP OR HEAT MAGNETS! IT SCRAMBLES THEIR DOMAINS
EARTH ACTS LIKE A BIG BAR MAGNET RELATED TO SPINNING IRON CORE? ? ? FORCE IS STRONGEST AT MAGNETIC POLES FLIP ABOUT EVERY 500, 000 YEARS
- THE NORTH POLE ATTRACTS THE SOUTH SIDE OF A MAGNET SO MAGNETICALLY THE NORTH POLE IS A SOUTH! - GEOGRAPHIC POLES (ON MAP) ARE NOT IN THE SAME SPOTS AS THE MAGNETIC POLES - COMPASS – POINTS AT MAGNETIC POLES - LESS ALIGNED WITH GEOGRAPHIC AS YOU MOVE CLOSER TO THE POLES (SEE NEXT SLIDE AND DRAW IT)
WHAT HAPPENS IF YOU BREAK A BAR MAGNET? YOU GET A BUNCH OF BABY MAGNETS
- Explain how currents and magnets exert forces on each other
- Right hand grip rule
- Magnets and magnetic fields lesson 1 answer key
- Force on a charged particle
- Chapter 24 magnetism magnetic fundamentals answers
- Compound machine
- What is the upward force that fluids exert on all matter
- A boxer cannot exert much force
- Force exerted by magnetic field
- Magnetic flux units
- Magnetism is an invisible
- Wb flux
- Magnetic moment and magnetic field relation