Lab 4 Activity on Glaciers

Lab 4 Activity on Glaciers - Lab Activity on Glaciers This...

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Lab Activity on Glaciers This module is part of the Virtual Geography Department Project and has been prepared for the Physical Geography Working Group of the project. These materials may be used for study, research, and education, but please credit the author and source: Karen A. Lemke , University of Wisconsin-Stevens Point, and The Virtual Geography Department Project. Linda Freeman , College of the Siskiyous, contributed to earlier versions of this module. All commercial rights reserved. Copyright 2002 by Karen A. Lemke. Earlier copyright 1998 by Karen A. Lemke and Linda Freeman. This lab exercise has been revised from the original for use in an online Introductory Earth Science course at Vincennes University. There have been many changes made to adapt to fit the curriculum. Please contact Jerry W. Kousen at [email protected] for comments. This module has been classroom tested. To make suggestions and corrections, please contact Karen A. Lemke at [email protected] . Assignment: Look through the glossary terms below before heading to the Lab Exercise on Glaciers. There are questions in the exercise to answer to complete the lab exercise and improve your understanding of glaciation. The glossary has the correct spellings and should act as your word key for this lab along with using the topographic map symbols. Some answer may be repeated while others are not used at all. Remember to insert into your lab answer sheets. Click on a feature below to see an example of that feature. Arete : a steep-sided, sharp-edged bedrock ridge formed by two glaciers eroding away on opposite sides of the ridge.
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Cirque : a semicircular or amphitheater-shaped bedrock feature created as glaciers scour back into the mountain. This is where the snow and ice forming the glacier first accumulates; it is the "headwaters" of a glacier. Col : a low spot or pass along a cirque or an arete. Groove : an elongate depression carved out of bedrock as numerous rock particles embedded in the base of a glacier scour away at the underlying bedrock as the ice flows across the landscape. Hanging Valley : a valley eroded by a small tributary glacier, such that the elevation of the valley floor is higher than the elevation of the valley floor that the hanging valley joins. The erosive power of glaciers is dictated by their size: the larger a glacier, the farther down into the landscape it can erode. Thus the valley floors of small tributary glaciers will be higher in elevation that the valley floor of the larger glacier that the small tributary glacier joins. Headwall : the steep back-wall of a cirque. Horn
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This note was uploaded on 04/03/2011 for the course PHYS 114 taught by Professor Comptonw during the Summer '10 term at Purdue.

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Lab 4 Activity on Glaciers - Lab Activity on Glaciers This...

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