Make a scale model of the geologic time scale to within fractions of inches or centimeters. The yard/meter stick: Imagine that geologic time is represented by the length of a yard, or better yet a meter, stick. Assume that January 1 is the formation of Earth and milliseconds before midnight on December 31 is present day. Calculate (to the fraction of a second) when significant events in geologic history happened. The calendar year: Imagine that the deep time of Earth's history is compressed into one year.Mark out specific time periods in geologic time along its length. The football field: Imagine that all 4.5 billion years of geologic time are represented by the length of a football field.Mark out specific time periods in geologic time along your route across the country. Trip across the country: Imagine that all 4.5 billion years of geologic time are represented by a roadtrip from Washington, DC, to Seattle - about 4500 km.It is even difficult for many geoscientists to really come to a true understanding of how long 4,600,000,000 years really is. Even when they are told that a number that large has 10 digits, they cannot comprehend anything that large (particularly that amount of time). When we tell students that the Earth is 4.6 billion years old, that number may have no meaning to them. resolving perceived issues with religious beliefs.the ways we know about the age of the Earth and other materials, and.the difference between relative and numerical age,.imagining or comprehending big numbers,.There are 5 main concepts with which students struggle when thinking about Deep Time - the concept that Earth has a multi-billion year history: Numerical age | Timescales | How do we know? | Religion | Examples & Exercises Essential Concepts Wenner, Geology Department, University of Wisconsin-Oshkosh Quantitative concepts: big numbers, exponential growth and decayĭeep Time - the geologic time scale by Jennifer M.
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