Assessment – Chapter 10 – Quiz Questions #5
pp. 201 - 229
1. _______________ Geologic feature that an eruption can produce.
2. _______________ Magma that has reached and cooled on Earth’s surface.
3. _______________ A place where magma cools underground.
4. _______________ A bowl-shaped volcanic feature on Earth’s surface.
5. _______________ A volcanic feature that occurs when water fills a caldera and lava oozes into the water.
6. _______________ A mound of magma that forms on the floor of a caldera.
7. _______________ Type of volcano that is erupting or has erupted recently.
8. _______________ Region where about half of the active volcanoes on Earth occur.
9. _______________ Substance that makes magma thick and sticky.
10. _______________ Mantle area over which a volcanic island can form.
11. _______________ Volcanic feature that can form on the sides of either a shield or composite volcano.
12. _______________ A combination of hot gases and ash that can move like a liquid down the sides of a volcano during an eruption. Can cause a great deal of destruction.
13. _______________ A natural cycle energized by the Sun that deals with water.
14. _______________ Igneous rock – formed by low gas & high silica magma.
15. _______________ Igneous rock – formed by high gas & low silica magma.
16. What is the difference between a conduit and a vent on a volcano?
17. Describe the three (3) phases in the life of a volcano.
18. Is the material that forms a volcanic neck considered to be solidified magma or lava? Explain.
19. How are pressure and heat involved in melting rock in the mantle?
20. How does plate tectonics cause volcanic islands to form in a chain?
21. Describe how the granite domes of Yosemite National Park were formed.
22. Describe the magma of fire fountain eruptions in terms of silica and gas content.
23. Explain how a shield volcano differs from a composite volcano.
24. What is the difference between a pyroclastic flow and a lahar?
25. How do igneous rocks form?
26. What about the appearance of an igneous rock gives you a clue about whether it cooled slowly or quickly?
27. Math Problem: The speed of a pyroclastic flow is 100 km/hr. How far would this flow travel in 10 minutes? (Show your work – not just the answer! Hint: Begin by converting 100 km/hr to ? km/min first.)