We now know that continents move approximately 2 cm per year. How do we know/measure this?

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asked Mar 18, 2021 87.6k views

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Paul Scheltema · Answer 1 · 2021-03-23T19:49:39+0000

Answer: to accurately measure the movement of the continents — more than 1 inch (2 centimeters) per year. ... About 4.55 billion years ago, matter condensed and then collided in a huge gaseous nebula, eventually creating the rocky bodies we now know orbiting ...

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We now know that continents move approximately 2 cm per year. How do we know/measure this?

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We now know that continents move approximately 2 cm per year. How do we know/measure this?