Unit 4 study guide: earthquakes and volcanoes Worth 5 extra credit pts on test if done (hand written) before the test on a separate piece of paper. Name: ______________________________ Period:____________________ 1. 2. 3. 4. 5. 6. 7. 8. 9. List the tool & units used to measure: mass, volume, distance, and time and temperature. Be able to define and calculate density using the correct units. Understand what convection currents are and how they work/ what causes them to occur. What is an earthquake? Where do earthquakes occur? Name and describe each kind of seismic wave (how fast they move and how they move). What tool is used to measure earthquakes? What scale is used to measure the magnitude of an earthquake? How many seismic stations are needed to find the epicenter? How does knowing the distance from the epicenter of these stations help determine where the epicenter is? 10. What is an earthquake time travel graph? 11. What is the focus of an earthquake? 12. What is the epicenter? 13. What is a tsunami? 14. What is the major fault that runs through CA? 15. What kind of seismic wave is most destructive? 16. Where is the ring of Fire? And what happens there? 17. What is liquefaction? 18. Describe the 3 types of volcanoes? 19. Where does magma come from? 20. What is the relationship between plate boundaries and volcanoes? 21. What are hotspots? 22. What is viscosity? 23. What factors affect volcanic eruptions? 24.Name 5 hazards associated with earthquakes. 25. What type of structures are the safest during an earthquake? 26.What conditions lead to buildings being unsafe during an earthquake?