The purpose of this activity is to give a graphic demonstration of the enormous extent of geologic time compared to recent time. Using the events listed below, construct a linear representation of Geologic Time by taking your group’s roll of adding machine paper and make a Geologic Timeline.
Directions: 1. Decide what scale you will use and record that at the beginning of your tape. You will use meters, centimeters and millimeters to represent units of time in the history of the earth.
a. If 46 meters represents 4.6 billion years, how many years does 1 m represent? ____________
b. How many years are represented by 1 cm? __________________ 10 cm? _____________
c. How many years are represented by 1 mm? _________________
2. Using your meter stick, mark off increments of a billion years along the bottom of the tape until you get to the “origin of Earth” at 46 billion years. Give yourself a little room past this mark to write on and cut your tape.
3. First, record the eras, periods and epochs along the bottom of the tape. You may want to use different colors of pencils to make it visually stand out and look attractive.
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