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Earth Science: CST Review , Day #6, Plate Boundaries and Rock Cycle, 3a, 3b, 3c Plate Boundaries and Rock Cycle (3a, 3b, 3c) 1. What does the Theory of Plate Tectonics help scientists explain?___________________________________________ 2. When plates move, they can form 3 types of plate boundaries. List the boundaries: 1._________________, 2._________________, 3.______________ 3. The uppermost mantle of the Earth, along with the overlying crust, behave as a strong, rigid layer. What is the name of this layer that makes up tectonic plates? _______________________ 4. What kind of plate boundary occurs where two plates grind past each other without destroying or producing lithosphere?_______ 5. Deep ocean trenches are associated with oceanic plates that are forced down into the mantle beneath a second plate. What is the name of this convergent boundary deep ocean trenches are associated with? _________________________ 6. What type of plate boundary is shown in the figure to the right?____________________ 7. What type of boundary is the San Andreas fault?_________________________ 8. Volcanic mountain ranges form by volcanic activity caused by the subduction of oceanic lithosphere beneath a continent. Which type of boundary will form volcanic mountain ranges?________________________ 9. At a divergent boundary, when spreading centers develop within a continent, the landmass may split into two or more smaller segments. They can develop on the seafloor or on land. What forms?____________ 10. Paleomagnetism is the natural remnant magnetism in rock bodies and provides evidence of tectonic plates. The discovery of strips of alternating polarity, which lie as mirror images across the ocean ridges, is among the strongest evidence of____________. 11. How does the age of seafloor sediments change with increasing distance from the ocean ridge?_________________________ 12. What happens when two continental plates collide?______________________________________ 13. What naturally formed solid is usually made up of one or more types of minerals?____________________ 14. What does the texture of a rock—that is, the size of its mineral crystals—depend on?_______________________ 15. What type of rock that forms when molten rock cools and crystalizes?_______________________________ 16. What type of rock forms when pieces of older rocks and loose material are cemented together?__________________________ 17. What type of rock forms when heat and pressure cause older rock to change into new kinds of rock?_______________________ 18. Which of the following is NOT one of the three types of rock?_________________________ 19. How are Igneous rock, Sedimentary Rock, and Metamorphic Rock classified?_____________________________ 20. A student finds a rock containing large fragments of gravel and fossils cemented together. What type of rock could this be?_____________________ YM 01/10