Thursday, December 16, 2010
Gave a geology final exam today and put an easy question on it (I thought it was a gift to the students). "What is the age of the Earth in Ma?" "Ma" as they all should know, means mega annum or million years and it's how ages are reported on their geologic time scales. Anything between 4,500 and 4,600 Ma would have been accepted for credit but most missed it. The age of the Earth was only mentioned a dozen or more times since the first day of classes (when I mentioned the age of the Earth is one of the main important themes in geology). We also had a 90 minute lecture on radiometric dating and the age of the Earth. I guess no one was listening. Oh, did I mention this was a lab Physical Geology course for science or education majors? Sigh.
Posted by Steven Schimmrich at 3:56 PM