Name:_______________________________________Date:_________________________Volcanoes, Earthquakes, & Tsunamis STUDY GUIDE Question Answer Lava is erupted magma; Magma is molten rock beneath the surface 1. What is the difference between lava and magma? Earthquakes, volcanoes, landslides 2. What are 3 things that can trigger tsunamis? volcano 3. What is a mountain that forms when molten rock is forced to the Earth’s surface? It encircles the Pacific plate where plate boundaries meet 4. How did the “Ring of Fire” get its name? Effusive eruption 5. What is the outpouring of lava without significant explosive eruption? Explosive eruption 6. What is a gas-driven explosion that propels magma and small fragments of material? High silica content 7. What causes a volcano to have an effusive eruption? High water content 8. What causes a volcano to have an explosive eruption? Pyroclastic flow 9. What is the most dangerous type of eruption because they are very hot and travel very fast? Shield volcano 10. Identify the volcano: Cinder cone volcano 11. Identify the volcano: Composite volcano 12. Identify the volcano: Effusive eruption 13. How does a shield volcano erupt? Layer after layer of effusive lava flows 14. How does a shield volcano form? Explosive eruption 15. How does a cinder cone volcano erupt? Explosive fragments and cinders fall and accumulate around the vent of the 16. How does a cinder cone volcano form? volcano Effusive and explosive eruption 17. How does a composite volcano erupt? Alternating layers of effusive lava flows and tephra 18. How does a composite volcano erupt? Earthquake 19. What is a shaking of the ground caused by sudden movement of large blocks of rock along the fault? San Andreas Fault 20. What is the most well-known and active fault in the U.S.? On plate boundaries 21. Where do most earthquakes occur? epicenter 22. What is the point on the Earth’s surface that is directly above the focus? Fault 23. What is a fracture or break in the Earth’s lithosphere where blocks of rock move past each other?
Name:_______________________________________Date:_________________________Volcanoes, Earthquakes, & Tsunamis STUDY GUIDE Question Answer 1. What is the difference between lava and magma? Lava is erupted magma; Magma is molten rock beneath the surface 2. What are 3 things that can trigger tsunamis? Earthquakes, volcanoes, landslides 3. What is a mountain that forms when molten rock is forced to the Earth’s surface? volcano 4. How did the “Ring of Fire” get its name? It encircles the Pacific plate where plate boundaries meet 5. What is the outpouring of lava without significant explosive eruption? Effusive eruption 6. What is a gas-driven explosion that propels magma and small fragments of material? Explosive eruption 7. What causes a volcano to have an effusive eruption? High silica content 8. What causes a volcano to have an explosive eruption? High water content 9. What is the most dangerous type of eruption because they are very hot and travel very fast? Pyroclastic flow 10. Identify the volcano: Shield volcano 11. Identify the volcano: Cinder cone volcano 12. Identify the volcano: Composite volcano 13. How does a shield volcano erupt? Effusive eruption 14. How does a shield volcano form? Layer after layer of effusive lava flows 15. How does a cinder cone volcano erupt? Explosive eruption 16. How does a cinder cone volcano form? Explosive fragments and cinders fall and accumulate around the vent of the volcano 17. How does a composite volcano erupt? Effusive and explosive eruption 18. How does a composite volcano erupt? Alternating layers of effusive lava flows and tephra 19. What is a shaking of the ground caused by sudden movement of large blocks of rock along the fault? Earthquake 20. What is the most well-known and active fault in the U.S.? San Andreas Fault 21. Where do most earthquakes occur? On plate boundaries 22. What is the point on the Earth’s surface that is directly above the focus? epicenter 23. What is a fracture or break in the Earth’s lithosphere where blocks of rock move past each other? Fault
Volcano_Earthquake_Tsunami_Study_Guide_Answer_Sheet_1.docx