the position of magnetic north on earth move at a speed of 60 KM per year. Explain why the position of magnetic north can still be used for navigation on a 12-hour journey
Answers
Answer:
You probably know that a compass doesn’t point to true north. Earth’s geographic north pole – and magnetic north pole – were first recognized as two different places in 1831. Until the early 1990s, the magnetic North Pole was known to lie some 1,000 miles south of true north, in Canada. Yet, as scientists realized, the location of the magnetic north was not fixed. Magnetic north was drifting at a rate of up to about 9 miles (15 km) a year. Since the 1990s, however, the drift of Earth’s magnetic north pole has turned into “more of a sprint,” scientists say. Its present speed is about 30 to nearly 40 miles a year (50-60 km a year) toward Siberia. And now – using satellite measurements – scientists in Europe have helped confirm a theory as to why Earth’s magnetic north pole is drifting so rapidly.
The European Space Agency (ESA) released this interesting article on May 14, 2020. It describes a new study in the peer-reviewed journal Nature Geoscience that describes the theory of “tussling magnetic blobs deep below Earth’s surface” at the root of the phenomenon of rapid magnetic pole drift since the 1990s.
Explanation:
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Answer:the magnetic pole is drifting due to a change in the flow of molten material in the Earth's interior.