Earthquake & Volcano Review Chapter 4 & 5 Mrs. Urban Question 1. Name the 3 types of stress related to Earth’s crust. 2. Does stress add or remove energy to rock? 3. What is the definition of stress related to Earth’s crust? 4. What type of stress causes rock to become thinner in the middle? 5. What type of stress pushes a mass of rock sideways in two opposite directions? 6. What is the definition of a “fault”? 7. Where do most faults occur? 8. How do the rocks move in a strikeslip fault? 9. Tension causes what type of faults like the Rio Grande Rift Valley? 10. Reverse faults normally occur at what type of plate boundary? 11. The San Andreas fault is what type of fault? 12. What type of plate boundary does the San Andreas fault occur? 13. An upward fold in rock is called what? 14. What is the definition of “plateau”? 15. What type of stress causes the Earth’s crust to fold? 16. What is the downward fold in rock called? 17. What layer of Earth do most earthquakes occur? 18. What makes up the lithosphere? 19. What is the point beneath the surface where rock breaks and an earthquake starts? Answer 20. In what direction do seismic waves carry the energy of an earthquake? 21. What type of earthquake wave can travel through both liquids and solids? 22. P waves are also known as what? 23. Which type of seismic wave vibrates side to side and up and down only through solids? 24. Which type of seismic wave produces the most severe ground movements? 25. What is a seismograph? 26. What two types of plate boundaries do volcanoes occur? 27. Before lava reaches the surface, the molten material is called what? 28. Where do volcano belts form? 29. What is the Ring of Fire? 30. How did the Hawaiian Islands form? 31. What is an island arc? 32. What type of plate boundary do island arcs form along? 33. What is the definition of “hot spot”? 34. Describe the parts on the inside of a volcano. 35. What is the difference between a dormant and extinct volcano?