GE2341 2011-Quiz 2 answer key

GE2341 2011-Quiz 2 answer key - WPI GE2341: Geology (A...

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1 WPI GE2341: Geology (A term-2011) Quiz 2 ( L ecture 4 & 5: Energy and Resource and Igneous Rocks) 11:35 to 11:50 am (open book & notes) (Please write down YOUR ANSWER IN FRONT OF EACH QUESTION!) Name: _________________ 1. Rocks do not have a specific chemical formula because: A. a rock can change its characteristics at any time B. the density of rocks can vary dramatically with depth in the Earth C. elements combine randomly to form minerals D. we prefer to give rocks names that are easy to remember E. they are a mix of different minerals, each with their own chemical formulas 2. Molten rock inside the earth is called (1) _____ but on the surface it is called (2) _____. A. (1) lava (2) magma B. (1) lava (2) extrusive C. (1) intrusive (3) magma D. (1) magma (2) lava E. (1) extrusive (2) intrusive 3. On average, the geothermal gradient inside the Earth’s crust is about: A. 1000°C per kilometer B. 100°C per kilometer C. 50°C per kilometer D. 25°C per kilometer E. 10°C per kilometer
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This note was uploaded on 09/28/2011 for the course GE 2341 taught by Professor Tao during the Fall '08 term at WPI.

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GE2341 2011-Quiz 2 answer key - WPI GE2341: Geology (A...

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