STUDY+GUIDE+ABOUT+PLATE+TECTONICS

1. What is the correct order (starting from the surface) of Earth’s layers? ……………. 2. The youngest rocks on the ocean floor are located on ……………………………………. 3. Earth’s inner core is……………………………………………………………………………………………… 4. The crust and upper mantle make up Earth’s……………………………………………………… 5. Plates of the lithosphere float on the…………………………………………………………………. 6. What is Pangaea?................................................................................................. 7. The process by which the ocean floor sinks beneath a deep-ocean trench and back into the mantle is known as………………………………………………………………………………………………… 8. Most geologists think that the movement of Earth’s plates is caused by……………………………. 9. The geological theory that states that pieces of Earth’s lithosphere are in constant, slow motion is the theory of……………………………………………………………………………………………………….. 10. The result of plate movement can be seen at ………………………………………………………………… 11. The ………………………………………. are mountains formed by the collision of the Indo-Australian Plate and the Eurasian Plate. 12. The presence of the same………………………………… on several continents supports the hypothesis of continental drift. 13. The hypothesis that continents have slowly moved to their current locations is called …………………………………………………………………………………... 14. According to Wegener’s hypothesis of continental drift,………………………………………….. 15. Plates move apart at …………………………………………………………. boundaries. 16. Plates slide past one another at ………………………………………………….............................. 17. Earth’s mantle is like............................................................................................................. 18. Any trace of an ancient organism that has been preserved in rock is called a………………….. 19. The formation of the Hawaiian Islands is one example of………………………………………….. 20. Before lava reaches the surface it is called ……………………………………………………. 21. The boundary between two plates moving together is called a …….. ………………………………. 22. Seafloor spreading occurs because ………………………………………………………………….
 * __ Questionnaire: Plate Tectonics __**

23. Continental drift states that continents have moved ……………………….. to their current location. 24. The Great Rift Valley in Africa is a …………………………………………………………………………………. 25. The Andes mountain range of South America was formed at a …………………….. . 26. Active volcanoes are most likely to form at …………………………………………. 27. ……………………………………………………….. are formed when two continental plates collide. 28. The …………………………………………………………. is (are) an example of a transform boundary. 29. A ……………………………………………………forms where two oceanic plates collide. 30. According to above figure, what type of plate boundary occurs between the North American Plate and the Eurasian Plate?............................................................................... 31. According to above figure, what type of plate boundary occurs between the Nazca Plate and the South American Plate?.............................................................................................. 32. Earth’s thick plastic-like layer is the ……………………………………………………………. ………….. 33. Plates move together at a(n) ……………………………………………………………………………………… 34. One plate is forced under another in a(n) …………………………………………………………………. . 35. A(n) ………………………………………………………………… _ is an underwater mountain chain. 36. The main points of evidence for ……………………………. _ are fossils, rocks, and climate. 37. When continental plates pull apart at a divergent boundary on land, a(n)………………………….. forms. 38. Two of Earth’s plates slip past each other along a ………………………………………. boundary. 39. Oceanic crust is made up mostly of an igneous rock called ………………………………………….. .

40. The lithosphere is broken into sections called ………………………………………. , which float on top of the asthenosphere. 41. The formation of volcanoes and mountain ranges can be explained by the theory of ……………………………………………………………. . 42. A continental plate collides with an oceanic plate at an(n) ………………………… boundary. 43. An ocean plate plunges beneath another plate and back into the mantle in a process known as …………………………………………………. 44. A major volcanic belt known as the …………………………………………… circles the Pacific Ocean. 45. Mountains that are formed by volcanoes along a coastline occur at a ……………………… plate boundary. 46. Magma that leaves a volcano’s vent is called …………………………………………………. . Use the diagram below to answer questions 47-51.

47. Pressure increases with depth toward the center of Earth. In which layer would you expect pressure to be the greatest?...................................... 48. According to the theory of plate tectonics, on which layer do plates float?........................ 49. Overall, which layer is the thickest? ………………………………………………

Use the diagram below to answer questions 50-54. 50. Which type of boundary occurs at X?...................................................... 51. What feature occurs at Y?.................................................... 52. What is happening at Z?............................................................ 53. Which type of plate boundary occurs at Y?.......................................... 54. What feature occurs at X?...................................................................