Curated OER
The Grand Canyon
In this geological processes worksheet, learners use Google Earth to access pictures of the Grand Canyon. Students look at the layering of rock over time. Learners complete 2 short answer questions.
University of Colorado
Are All Asteroids' Surfaces the Same Age?
There are more than 600,000 asteroids in our solar system. Pupils analyze images of two asteroids in order to determine if they are the same age. They count craters for each asteroid and compare numbers.
University of Colorado
Are All Asteroids' Surfaces the Same Age?
Did you know scientists can tell the age of an asteroid by looking closely at its craters? This final lesson of a six-part series focuses on two asteroids, Gaspra and Ida, in order to demonstrate the concept of dating asteroids. Scholars...