Earth Science Section 9.1 Homework: Geologic Time Scale: Due Wednesday, 12/12/12

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Read Section 9.1, pages 211-214 and page 66. Answer questions 4 and 5 on page 214 and answer questions 1-6 of the Map Skills Activity called “Geologic Map of Bedrock in Ohio” on page 208.

Name (Last Name, First Name) *

Period *

Question 4, Page 214: List the following units of time in order of length from shortest to longest: year, period, era, eon, age, and epoch. *

Question 5, page 214: Name the three eras of the Phanerozoic Eon, and identify how long each one lasted. *

Question 1, page 208: What geologic periods are represented in the bedrock of Ohio? *

Question 2, page 208. Where is the youngest bedrock in Ohio? Where is the oldest bedrock in Ohio? *

Question 3, page 208: If you traveled from east to west across Ohio, how would the ages of the rock beneath you change? *

Question 4, page 208: Based on the geologic cross section, how does the shape of the rock beds cause rocks of different ages to be exposed at different places in Ohio? *

Question 5, page 208: Why is the Mississipian Rock likely to be located next to Devonian rock? *

Question 6, page 208: The first reptiles appeared in the fossil record during the Pennsylvanian Period. If you wanted to look for fossils of these reptiles in Ohio, in what part of the state would you look? Explain your answer. *

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