Earth Science Section 13.2 Homework: Volcanic Eruptions: Due Friday, 12/21/12
Read Section 13.2, pages 325-330. Answer the questions that follow.

How Volcanoes Work (This site will help with many of the questions on this homework.): http://www.geology.sdsu.edu/how_volcanoes_work/

USGS Photo Glossary of Volcanic Terms (This site is also extremely helpful for words you don't know.): http://volcanoes.usgs.gov/images/pglossary/index.php

Information and animations about volcanoes that will help with this homework: http://www.nationalgeographic.com/forcesofnature/forces/volcanoes.html

Information about Mt. Vesuvius: http://www.cotf.edu/ete/modules/volcanoes/vmtvesuvius.html

Description of Pyroclastic Flow: http://volcanoes.usgs.gov/images/pglossary/PyroFlow.php

Link to information about volcanic ash: http://volcanoes.usgs.gov/ash/




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Last Name, First Name *
Period (Put only the number.) *
What is the most explosive type of lava? *
Basaltic (mafic) magmas have _______________________ silica (light colored silicate minerals) content. *
Which material would have the lowest VISCOSITY? Viscosity is defined as the resistance of a fluid to flow. *
Smooth, ropelike basaltic lava is known as *
The eruption of Mount Vesuvius, Italy in the year 79 AD is a good example of the destruction caused by a pyroclastic flow. Describe what a pyroclastic flow is and why it is so dangerous. Use the links above to help you. *
Volcanic ash is extremely hazardous to human health and aircraft flying in the vicinity of a volcanic eruption. Use the link above to describe what volcanic ash is and why it is so hazardous. *
What is the largest material that is erupted from a volcano? *
Which of the following is true about shield volcanoes? *
Which of the following properties are usually characteristic of cinder cone volcanoes? *
Which type of volcano is very large and is formed at subduction zones from alternating layers of lava and pyroclastic material? *
Describe the steps involved in the formation of a caldera like Crater Lake in Oregon. See page 329 for a diagram and the links above for a description. *
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