Answer the Following Draw the domain of an unmagnetized bar magnet

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Presentation transcript:

Answer the Following Draw the domain of an unmagnetized bar magnet Draw a magnetic field around a bar magnet Design an experiment which would allow you to see a Magnetic Field What are the two main categories of magnets? What is different about them?

Breaking a magnet Dropping or hitting it hard Heating it up

Magnetic Field Lines Field lines NEVER cross Complete loop from North to South Closer lines- Stronger Force

Biggest Magnet Around Earth Strong magnetic field – so produces magnets from ferromagnetic materials

Magnetic Declination Magnetic poles don’t always stay put Secular Variation- the movement of the magnetic poles over time Magnetic Declination – angle between polar north and south and magnetic north and south

Magnetosphere Solar wind – comes from sun Magnetosphere saves us High speed particles shooting at earth Magnetosphere saves us Van Allen Belts – regions of protons and electrons moving at high speeds, trapped

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