Meteorology 1020

Met1020 - Internet Assignment Internet Assignment 6

The Illinois State Museum has a very good online exhibit related to ice ages. Access that page through the Internet Companion and answer the following questions. PBS Big Chill is another resource to use.

Enter your response to each question in the blanks provided. The cursor has to be in the box in order to enter a response. Be sure to fill out all of the fields.
Then click submit when you are finished to hand in your answers.

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Ice Ages

  • 1. The text and classroom lecture emphasized the waxing and waning of icea ages in the past 1 million years. However, ice ages and interglacials have been occurring over much longer periods of geologic time as well.
    • What are some of the suggested causes for the general cooling over the past 60 million years?
    • What geological factors (rather than changes in incoming solar radiation) may help to explain the occurrence of ice ages during the past 600 million years?
    • According to these sources of informationm, are we in a cooling period in which glaciers retreat and advance?
  • 2. How much of Canada was covered by glacial ice 10,000 years ago?
  • 3. How many of the Great Lakes were present 18,000 years ago? 10,000 years ago?
  • 4. What is loess and where are the greatest deposits found relative to the location of glaciers?

    Due Date November 3, 2000
    Click to hand in your answers.