Name ____________________________ Date _______________________ Ch. 10 Plate Tectonics Study Guide 1. 2. 3. 4. 5. 6. Name and describe the five physical layers of the Earth. Which layer of the Earth makes up most of its mass? What is the connection between the lithosphere and the asthenosphere? What is continental drifting? Who proposed the theory of continental drift? (rewrite sentence) Earth’s landmasses began as one big supercontinent known as __________. 7. (rewrite sentence) The two landmasses the supercontinent eventually broke into were called ______________ and ______________. 8. List four proofs of evidence/ explanations that continental drift is occurring. 9. What is a plate boundary? 10. Name the two types of crust that make up tectonic plates. Which type of plate is most dense? Which type of plate is the thickest? 11. What is seafloor spreading? Where does it take place? 12. What is a rift zone? 13. (Rewrite this statement) Seafloor spreading also provides proof that continental drift is occurring.(True or False) . 14. What is the mid-ocean ridge? Where is younger rock found? Where is older rock found? 15. Draw and label a model of seafloor spreading. Include the rift zone, magma, older rock, and younger rock, and subduction zone/trench. 16. Name and describe the three main types of plate boundaries. 17. What type of event normally occurs at transform boundaries? 18. What is a subduction zone? 19. How fast do tectonic plates move per year? 20. What causes tectonic plates to move? 21. (rewrite sentence) _____________________ tell scientists important information about the interior of the Earth. 22. How does density affect plate boundaries? 23. What is rifting? What does rifting cause? 24. Name and describe (in detail) the three types of “convergent” boundaries. 25. What is a “fault”?