Chapter 3 Review
Cones, Eruptions, and Pyroclasts

Name___________________

1. What is lava?



2. Name the two smallest particles of pyroclastic material.



3. Name the two largest particles of pyroclastic material.



4. What is a pyroclastic flow?



5. What is the difference between pahoehoe and aa lava flows?



6. What is the difference between high and low viscosity magma?



7. How does a lava tube form?



8. Name the two reasons that volcanic eruptions occur?




9-14. Draw the three volcanic cone shapes and label each.







15-16. What are the two most non-explosive eruption types?



17-18. What are the two most explosive eruption types?



19. What is a hot spot? Use the term mantle plume in your definition.



20. What is a caldera?



21. How does a caldera form?

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