Questions and Answers
What is the main cause of plate movement according to the text?
Radioactive decay of uranium and other elements
What is the composition of the earth's mantle, as described in the text?
Oxygen, silicon, magnesium, and iron
What is the role of convection currents in plate movement, as per the text?
Heating the rock near the mantle and causing it to rise toward the crust
What causes the flowing down the ridge and gives the plate a slight push along, as described in the text?
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How are converging boundaries identified, according to the text?
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What is the upper part of the mantle called where the plates ride along?
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How thick can continental plates be, according to the text?
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What is the theory that the surface of the earth is broken into larger pieces of crust called?
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What do geologists study?
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What is the average thickness of oceanic plates, as per the text?
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