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11 Cards in this Set
- Front
- Back
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The __ __ is a narrow magnet mounted so it can freely pivot to any direction.
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magnetic compass
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Why does a magnetic compass always point to the north?
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Because the earth has a magnetic field.
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__ ___ is a pioneer of the study of magnetism.
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William Gilbert
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A _____ is a small model of the earth used to demonstrate the magnetism of the lodestone.
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terrella
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Gilbert's work called Concerning Magnetism, Magnetic Bodies and the Great Magnetic Earth is also known as ___ ____.
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De Magnete
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What does the magnetic field around the earth do?
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It protects the Earth from harmful solar effects.
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What has been discovered concerning animals and magnets?
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That some animals have the ability to sense the Earth's magnetic field, when navigating from place to place.
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Are the magnetic North and South pole the same as the geographic North and South Pole?
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No.
North Magnetic Pole is 1,000 miles away from the N.P. South Magnetic Pole is 1,600 miles from the S.P. |
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Who was the first to discovered the difference between the magnetic poles and geographical poles?
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Christopher Columbus
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An instrument used to study the earth's magnetic fiel is the __ __.
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dipping needle
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Devices that measure the strength of magnetic fields or shifts are called ______.
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magnetometer
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