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Ch 7 L 3 questions

chapter 7 lesson 3 questions

QuestionAnswer
1. The theory that proposes that Earth's surface is broken into moving, ridged plates called ____________ Plate Tectonics
2. Compare And Contrast the geological activity that occurs along the three types of plate boundaries 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
3. Explain why mantle convection occurs Mantle convection occurs because hot rocks are less dense so they rise while colder rocks are more dense and sink.
4. Tectonic plates move because A. Convection Currents
5. Name the type of boundary between the Eurasian plate and the North American plate Divergent boundary
6. List the cause and effects of convection currents Cause: air that is more heated rises, and gets replaced by air that is cooler. Effects: earthquakes and volcanic eruptions
7. Explain why earthquakes occur at greater depths along convergent plate boundaries At greater depths, the plate gets hot enough to cause earthquakes.
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? 75000 cm or 750 meters
Created by: AnEpicWinner
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