This is a great no prep self-checking activity to review absolute age calculations. Students need to answer 15 questions to reveal the Thanksgiving themed image. For each question they get correct, pixels of an image are revealed. Once all the questions are answered correctly, students will see the whole image.
Includes questions such as:
- The ratio of parent to daughter isotopes after 4 half lives is 1:__.
- A 20 year old rock is __ half lives old if each half life is 4 years.
- A 450 g fossil contains 56.25 g of parent isotope after __ half lives.
- A 200 g rock contains __ g daughter isotope after 3 half lives.
Easy to use – you’ll be purchasing a PDF with a forced copy link to a Google Sheet. Share with your students, allowing each of them to make a copy.
Answer key included.
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