NATS 1560 Lecture 5: Earth- Magnetic Field, Air and Water
8 Feb 2017
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Document Summary
Magnetic field: earth"s magnetic field extends out 100,000"s of kilometers from the surface of earth. Alignment in rock: the magnetic field is important as it diverts most of the high energy ionizes particles of the solar wind away from earth. The core is metallic, and at high temperatures this metal will be charged. The spinning of a charged particle produced a magnetic field. Outer core which is liquid, can"t hold onto electrons, move charges. If a planet has a magnetic field, charged material flowing or spinning inside that planet: as time passes the magnetic field changes. What we call sea floor stripping, seen on the floor of the atlantic, we can tell that the north and. South poles have reversed at least nine times in more recent geological time. New rocks form, iron will line up to compass direction and harden in place, magma solidifies.
