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Scientists use sonar images to watch how the tectonic plates move and spread to create faults or collide to create mountains and volcanoes. The tectonic plates are large pieces of the crust floating on the mantle that push and pull against each other. The more these plates move the more landforms are created, whether underneath or above water. Using the images they see how often the plates move to create these land features and use this to see how active they are.

I'm sorry if any of this information ended up being wrong/too vague, I couldn't find literally anything on it for some reason and it was better than "find it yourself" :)

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bee adams

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3y ago

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