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John Tuzo Wilson

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John Tuzo Wilson was a famous Canadian scientist who studied the Earth. He was a geophysicist and a geologist. This means he studied how the physical parts of our planet work. He is best known for his work on plate tectonics. This is the theory that the Earth's outer layer is broken into pieces. These pieces are called tectonic plates. They move slowly over a softer layer underneath them.

Wilson helped us see how these plates move in different ways. He came up with the idea of hot spots. A hot spot is a very hot region deep under the Earth's crust. He used the Hawaiian Islands to show how this works. As a plate moves over a fixed hot spot, volcanoes form in a line. He also described transform faults. These are places where two plates slide past each other horizontally. The San Andreas Fault is a famous example of this.

Wilson had a very busy and interesting life. He was born in Ottawa, Canada, on October 24, 1908. He studied at the University of Toronto and Cambridge. He later earned a Ph.D. from Princeton University in 1936. During the Second World War, he served as a Colonel in the Royal Canadian Engineers. He even worked on a mission called Operation Musk Ox. After the war, he became a professor at the University of Toronto.

Many important things are named after his great work. There is something called the Wilson cycle. This describes how the seabed expands and then contracts. Two underwater volcanoes in Canada are called the Tuzo Wilson Seamounts. Scientists even named a large area under the Earth after him. He won many awards, like the Wollaston Medal in 1978. He was also a Companion of the Order of Canada.

Wilson was not just a man of science. He was also an avid traveler and photographer. He visited many places like China, Africa, and the polar regions. He took photos of rocks, but also of people and animals. He even hosted a television series called The Planet of Man. Today, his name is remembered at the Ontario Science Centre. There is a giant spike there that shows how much plates have moved.

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