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Magnetic Field

Magnetic Field. Area around a magnet where the magnetic “force” could affect other objects. [http://www.ac.wwu.edu/~vawter/PhysicsNet/Topics/MagneticField/gifs/B-FieldMagnet.jpg]. Magnetic Field. Compass needles are magnets that can rotate when placed in a magnetic field.

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Magnetic Field

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  1. Magnetic Field • Area around a magnet where the magnetic “force” could affect other objects. [http://www.ac.wwu.edu/~vawter/PhysicsNet/Topics/MagneticField/gifs/B-FieldMagnet.jpg]

  2. Magnetic Field • Compass needles are magnets that can rotate when placed in a magnetic field. [http://www.school-for-champions.com/science/images/magnetic_detection2.jpg]

  3. Movement of Magnetic North Pole

  4. Movement of Magnetic South Pole

  5. Magnetic Field • Field lines are always drawn from North to South on a magnet. Magnetic Poles [http://www.wfu.edu/physics/pira/ResourceCD/ResourceImages/PhysicsDrawings/Magnetic_Field_Lines.gif]

  6. Magnetic Force • Opposite poles will attract. [http://www.bbc.co.uk/schools/ks3bitesize/science/images/sci_dia_75.gif]

  7. Magnetic Force • Same poles will repel. [http://www.bbc.co.uk/schools/ks3bitesize/science/images/sci_dia_75.gif]

  8. Magnetic Force • Stronger forces exist when magnets are close to one another. Click here for a magnetic force demonstration.

  9. Magnetic Force • Only certain metals are magnetic. (ex: iron, cobalt, nickel) • These metals can act like magnets when their magnetic domains are aligned. [http://www.mcdl.net/i/magnetic_domains.gif]

  10. Magnetic Force • Permanent magnets are created when a magnetic metal is surrounded by a strong magnetic field. • This can be accomplished by using electric current! Click Here for an Electricity & Magnetism Demo

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