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Name _______________________________ Opt II Plate Tectonics Review On the back of this paper, identify the lithospheric plates shown below. Label the following mountain ranges: Atlas, Alps, Andes, Appalachians, Cascades, Himalayans, and Urals. Add arrows to show the direction of plate movement. Answer the questions on the back of this paper. Urals Cascades 13 2 5 3 1 Alps Appalachians 8 9 Himalayans 1 Atlas 7 Andes 6 4 14 11 10 12 The lithospheric plates identified on plate map include: 1. ______ Pacific____________ 2. ______North American_______ 3. ______Cocos_____________ 4. _________Nazca _________ 5. ______Caribbean__________ 6. ______South American_______ 7. ______African____________ 8. __________Arabian_________ 9. ______Eurasian___________ 10. _____Indo-Australian________ 11. ____ Philippine___________ 12. ________Antarctic__________ 13. _____Juan de Fuca________ 14. __________Scotia__________ 15. What is the lithosphere? Topmost solid portion of earth (crust & upper mantle). 16. Describe diverging plate boundaries terms of a. movement: lithospheric plates move apart b. result: _new oceanic crust is formed 17. Describe converging plate boundaries terms of a. movement: lithospheric plates come together b. result: subduction of old oceanic crust at a trench 18. Describe sliding plate boundaries terms of a. movement: lithospheric plates slide past each other b. result: faulting and shallow focus earthquakes 19. Describe colliding plate boundaries terms of a. movement: two continental lithospheric plates come together b. result: folded mountains 20. Match the following with the correct type of plate boundaries. a. San Andreas Fault i. colliding b. East Pacific Rise ii. converging c. Trenches iii. diverging d. Mid-ocean ridges iv. sliding e. Subduction f. Magnetic striped pattern of rocks g. Himalayan Mountains h. Shallow focus earthquakes i. Rift valley j. Volcanic mountains k. Deep focus earthquakes l. Island arcs like the Aleutian Islands m. Mid-Atlantic Ridge Name __________________________ Plate Tectonics Review 21. Theory of Continental Drift + Sea-floor Spreading = Theory of Plate Tectonics. 22. Alfred Wegener developed the Theory of Continental Drift. 23. Harry Hess developed the Theory of Sea-Floor Spreading. 24. What is the Ring of Fire? It is a subduction zone at the outer edges of the Pacific Ocean with lots of volcanic and earthquake activity. 25. What is the ‘conveyor belt’ for the lithospheric plates? Convection currents which are located in the upper mantle. 26. What is the asthenosphere? It is the ‘plastic-like’ layer in the upper mantle. The lithospheric plates ride atop the asthenosphere. 27. Refer to your plate tectonics map. Which of the mountains are volcanic, subduction zone volcanoes? The Andes and the Cascades 28. Refer to your plate tectonics map. Which of the mountains are formed by the collision of lithospheric plates? The Appalachians, Alps, Urals, Atlas, and Himalayan Mountains. 29. Refer to your plate tectonics map. Where would you find the East Pacific rise? At the boundary between the Nazca and Pacific Plates. 30. List some famous island arcs? Why are island arcs formed? What type of mountains are formed at island arcs? The Aleutians, the Kuriles, Japan, the Ryukyus, and the Philippines are all island arcs that form when two oceanic plates converge. They form volcanic mountains. 31. Use the following terms to show the structure of the earth from the surface to the center: asthenosphere, inner core, lithosphere, lower mantle, outer core. Lithosphere, asthenosphere, lower mantle, outer core, and inner core.