Full text: http://www.oercommons.org/courses/earth-science-4/view
Full text: http://www.oercommons.org/courses/geology-4/view
Below are OER collections containing a variety of Earth Science related course materials (e.g., readings, quizzes, simulations, assignments, and more).
Search OER Commons for Earth Science materials
Search MERLOT for Earth Science materials
SEARCH TIP: OER Commons and Merlot allow you to further limit results by sub-disciplines and material type.