EARTH SCIENCE
MAGNETISM
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
True
|
|
False
|
|
Either A or B
|
|
None of the above
|
Detailed explanation-1: -Magnetic north is determined by the direction of a compass points. So, the magnetic north and south poles of the earth are different from its geographical north and south poles.
Detailed explanation-2: -The magnetic poles are quite distant from their geographic counterparts. The North magnetic pole is located to the south in Northern Canada; the geographic South pole is at the center of the Antarctic continent, but the magnetic pole is hundreds of miles away, near the coast.
Detailed explanation-3: -So, the magnetic south pole of the earth is in the direction of the geographic north pole and the magnetic north pole of the earth is in the direction of the geographic south pole. So, the given statement is false.
Detailed explanation-4: -This dipole defines an axis that intersects the Earth’s surface at two antipodal points called geomagnetic poles. Based on the WMM2020 coefficients for 2020.0 the geomagnetic north pole is at 72.68°W longitude and 80.65°N latitude, and the geomagnetic south pole is at 107.32°E longitude and 80.65°S latitude.
Detailed explanation-5: -Because opposite poles attract, this means that as a physical magnet, the magnetic north pole of the earth is actually on the southern hemisphere. The direction of magnetic field lines is defined such that the lines emerge from the magnet’s north pole and enter into the magnet’s south pole.