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m&m 8.3

Earth As a Magnet

QuestionAnswer
Magnetic compass A narrow magnet mounted so that it can freely pivot horizontally to point in any direction. Responds to earth's magnetism and points north
William Gilbert A pioneer of the study of magnetism. First scientist to realize that earth is a magnet and has a immense magnetic field
North and south magnetic pole. Located in northern Canada and Wilkes Land in Antarctica respectively.
Dipping needle Consists of a narrow magnet like a compass needle free to pivot vertically instead of horizontally. Used to measure angle that earth's magnetic field makes with the earth's surface
Magnetometers Devices that measure the strength of magnetic fields or detect shifts in such fields
Magnetosphere The extent of earth's magnetic field. Shields earth's surface and lower atmosphere from the harmful effects of the solar wind
Magnetopause Outer boundary of the magnetosphere
Aurora borealis and australis Colorful lights seen in the northern and southern skies caused by collisions between charged particles of the solar wind and the earth's upper atmosphere
Van Allen radiation belts Doughnut-shaped belts consisting of protons and electrons of the solar wind that penetrate the magnetosphere and are trapped in the earth's magnetic field
Created by: Jer Stephens
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