Matthew Partingt
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Everything for the Plate Tectonics Section of the A2 Unit 3 Exam

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Matthew Partingt
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Unit 3: A2 Geography: Plate Tectonics and Associated Harzards

Unit 3: A2 Geography: Plate Tectonics and Associated Harzards

Frage 1 von 5

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Alfred ( Wegener, Hess, Vine, Deliah ) came up with a theory in ( 1962, 1948, 1912, 1905 ) that 300 million years ago there was one single continent known as ( Pangaea, Gondwanaland, Pangea, Wegener ). He stated that this continent then split into two continents known as ( Laurasia, Pangaea, Continental Drift Land, Asian Pacific ) and Gondwanaland. Today's continents were formed from further splitting of the two continents. He named this theory ( Continental Drift, Island Drift, Wegener's Drift Theory, The Drift Theory ) and supported his theory with several pieces of evidence.

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Frage 2 von 5

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rise to the Earth's core. As they reach the they cool and spread. This drags the plates above them causing a new crust to form. As the earth never increases is size some plates are destroyed. This occurs when one plate under the other. This process is known as

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Frage 3 von 5

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Which pieces of evidence were used by Alfred Wegener to prove the Continental Drift Theory?

Wähle eine der folgenden:

  • Mesosaurus found in Africa and South America, Glacial Deposits in India and South America and the Rock Sequence in Scotland and Eastern Canada.

  • Glacial Deposits in India and South America , the Rock Sequence in Scotland and Eastern Canada and the discovery of the Mid Atlantic Ridge.

  • The discovery of the Mid Atlantic Ridge, Paleomagnetism and the Mesosaurus found in Africa and South America.

  • Mesosaurus found in Africa and South America, Coal Mines located in the UK despite needing hot conditions and the discovery of the Mid Atlantic Ridge.

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Frage 4 von 5

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Who used sonar on the Atlantic Ocean floor and noticed it wasn't the deepest in the centre, helping identify the Mid Atlantic Ridge?

Wähle eine der folgenden:

  • Fred Vine

  • Harry Hess

  • Alfred Wegener

  • Maurice Ewing

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Frage 5 von 5

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used sonar on the Atlantic Ocean floor to help identify the Mid Atlantic Ridge in . 14 years later in a geologist named noticed that younger rocks wear nearer to the Mid Atlantic Ridge and older rocks further away. He concluded that the sea floor was spreading from the ridge by up to per year. knew that iron minerals within rocks align themselves with the earth's magnetic field. Every years the poles reverse causing new rocks to flip direction. This resulted in a symmetrical pattern of different facing rocks on either side of the ridge.

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