EC4 Lecture 7b: Radioactivity (23min, 2pts Extra Credit, Optional)

This is an OPTIONAL Extra Credit (do the other extra credit's before this one).  You don't need to do this, but I provide it here in case you might be interested in learning more about radioactivity.

This is an EXTRA CREDIT Assignment.  These points will be used ONLY to help you!  This extra credit opportunity may only be available for a short time (so don't miss out)!

How do we know how old planets and moons in the Solar System are? This very important question can be answered by understanding how RADIOACTIVITY works. 

You must watch the entire video to get the extra credit. Canvas will know when you have finished and will award points accordingly.  By submitting this assignment, you are representing to the instructor (and to your fellow students), that you watched the video, engaged with it's content, and learned a thing or two (we hope).