Online College Courses for Credit

Rock Cycle

Rock Cycle


Prezi lesson on the Rock Cycle.

A Prezi lesson on the three types of rocks and processes they are formed by in the Rock Cycle.

See More
Fast, Free College Credit

Developing Effective Teams

Let's Ride
*No strings attached. This college course is 100% free and is worth 1 semester credit.

29 Sophia partners guarantee credit transfer.

312 Institutions have accepted or given pre-approval for credit transfer.

* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 27 of Sophia’s online courses. Many different colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.


A Prezi (with audio) of the Rock Cycle including the three rock types and the processes by which they are formed.