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chapter 7 lesson 3 questions

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Question
Answer
1. The theory that proposes that Earth's surface is broken into moving, ridged plates called ____________   show
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show divergent plate boundary- forms where two plates seperate, transform plate boundary- forms where two plates slide past each other, convergent plate boundary- forms where two plates collide  
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3. Explain why mantle convection occurs   show
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4. Tectonic plates move because   show
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5. Name the type of boundary between the Eurasian plate and the North American plate   show
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show Cause: air that is more heated rises, and gets replaced by air that is cooler. Effects: earthquakes and volcanic eruptions  
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show At greater depths, the plate gets hot enough to cause earthquakes.  
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8. Two plates in the South Pacific separate at an average rate of 15 cm/y. How far will they have separated after 5000 years?   show
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