FORESTRY
GENERAL FORESTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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angle between true and magnetic
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amount of local attraction
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angle between true and magnetic AND amount of local attraction
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none of the answers listed
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Detailed explanation-1: -Magnetic declination (sometimes called magnetic variation) is the angle between magnetic north and true north. Declination is positive when this angle is east of true north and negative when it is west. Magnetic declination changes over time, and with location.
Detailed explanation-2: -The magnetic inclination is the angle between the earth’s surface and the magnetic field lines. Magnetic declination is the angle between the magnetic north of the compass and the true north. The declination can be measured using a compass, the direct measurement method, and a map.
Detailed explanation-3: -At most places on the Earth’s surface, the compass doesn’t point exactly toward geographic north. The deviation of the compass from true north is an angle called “declination” (or “magnetic declination").