Online College Courses for Credit

Planet Earth

Planet Earth

Author: Sahil Soni

A tutorial about the planet Earth

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.

47 Sophia partners guarantee credit transfer.

299 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 33 of Sophia’s online courses. Many different colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.



MS-ESS1-4. Construct a scientific explanation based on evidence from rock strata for how the geologic time scale is used
to organize Earth’s 4.6-billion-year-old history.


What is one thing that you found interesting though out the tutorial, and what is one thing that you want to learn more about? 

write this on a piece of paper and submit to your teacher for further instruction.