EXAM 3

DUE: FRIDAY, APRIL 10 (11:59 pm)

General Guidance:

• The exam questions below cover the material we will discuss in class. Your answers should reflect what we cover in class, the posted notes, and the text book.
• It is best to work on the questions as we cover the material; you should feel free to bring the questions up in class for discussion.
• Be thorough, it may take one or two paragraphs to completely answer the question.
• Put the answer into your own words. Short quotes are OK, but your answer should not be a single, long quote from a source.
• Please answer the questions using complete sentences, and be sure to use proper spelling and grammar (worth 10%).
• The answers must be typed.
• Informal citations are required.
  • If you are using information from the textbook; indicate the page number
  • If you are using information from your class notes; indicate so
  • If you are using other sources, you should indicate the source
  • Format examples: "According to [source], [followed by the information]" OR "[information] [followed by source in parentheses]"
• Answers that are copied from the book, notes, another student, or any other source (verbatim or superficially rephrased) will not be accepted. While you should use all the resources available and you can and should work with other students, the work you submit must be your own work in your own words.

Click here to download the file.

1. Describe three things released by a volcano. (10 pts.)
2. Explain the difference between a shield volcano, composite volcano, and cinder cone. (5 pts.)
3. What is a caldera and how does it form? (5 pts.)
4. What are the three major compositional types of igneous rocks and what are their characteristics? (5 pts.)
5. What determines whether or not a volcano is explosive? (5 pts.)
6. You find an igneous rock (one rock) with two very different mineral grain sizes (some of the mineral crystals are large enough to see, but most are too small to see) how did this occur? How did this rock form with two different sizes of crystals? (5 pts.)
7. Describe three of the ways in which metamorphic rocks are formed. (15 pts.) 
8. Describe foliation and how it forms. (5 pts.)
9. Describe two things you would look at in a metamorphic rock that would allow you to determine the metamorphic grade, and explain what each would tell you. (10 pts.)
10. Describe the some of the stress conditions that can alter a rock (be sure to include the types of differential stress). (10 pts.)
11. Describe the three possible types of strain responses a rock may show as a result of stress (remember: stress is what is done to the rock, strain is a description of how the rock responds to the stress). (15 pts.) 
12. Draw cross-sectional (from the side) views of an anticline fold, a syncline fold, a normal fault, and a reverse fault. (For the folds, draw several layers of rock that have been folded. For the faults, draw the fault line and a layer that has been broken by the fault, and show the displacement of that layer. For each, draw arrows showing the direction of differential stress that created the feature.) (10 pts.)

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