This is the homework and happenings page for Owatonna Junior High School's 8th grade Earth Science class with Mrs Koessler. Here you will find agendas, assignments, extra credit opportunities, and tutorials for subjects covered in this class.
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Wednesday, November 19, 2008
Radioactive Decay
Today in class we discussed:
- Radioactive elements
- Use of radioactive elements in determining the absolute age of rocks
- What is a half-life?
- The role of Potassium 40 and Carbon 14 in dating rocks and fossils.
Worked on Radiometric Dating Activity
Homework due Wednesday/Thursday
Finish lab and study for quiz on geologic time
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