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<H1>Geologic Time Scale</H1>
See also: the <A HREF="geo/timescale.html">Geologic time scale</A><P>This page has a geologic time scale metaphor calculator. This is an interactive calculator for metaphors for the geologic time scale. It allows you to figure out how long it has been since the dinosaurs died out if all of earth history fitted into 50 minutes (or any other metaphor you want to use) can be found if you view this page with a frames/javascript enabled browser. Shows major origination and extinction events in the history of life. Interactive geologic time scale metaphor calculator.</P>
<h2>time exersise for Earth Science</H2>
Use this calculator to figure out if your class was 40 minutes long, how much of it would be the time since humans evolved on earth.
<P>You can use this calculator to create your own metaphor for geologic time.
The history of the could be the the distance from your home to school - you can figure
out where dinosaurs would be on the trip. Or the history of time could be the length of
a class - and you could figure how much of the class you have to sit through before intelligence
appears (if your class is 40 minutes long, human history begins in the last 1.5 milliseconds).</P>
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<IMG SRC="graphics/logothmb.gif" ALT="Geologic time scale [Athro Limited, Education on the Web]" WIDTH=100 HEIGHT=34 ALIGN=right>
<P>This document, and much of this site, uses frames and JavaScript. Try the <A HREF="index1to.html">Reduced graphics, no javascript version</A> of the site.
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Part of the <A HREF="http://www.athro.com" TARGET="_top" >Athro, Limited web site</A>.<BR>
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Copyright © 1997 Athro, Limited. All Rights Reserved.<BR>
Written by Paul J. Morris <A HREF="mailto:mole@morris.net">mole@morris.net</A><BR>
Maintained by <A HREF="general/comment.html" TARGET="_blank" >Athro Limited.</A><BR>
Date Created: 16 Nov 1997<BR>
Last Updated: 16 Jan 2000
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