Radioactive dating math problems
If possible, the ink should be tested, since a recent forgery would use recently-made ink.
In the case of Carbon, with a decay constant λ ≈0.000121 we have an expected life of a Carbon-14 atom as: E(t) = 1 /0.000121 E(t) = 8264 years.
This half life is a relatively small number, which means that carbon 14 dating is not particularly helpful for very recent deaths and deaths more than 50,000 years ago.
After 5,730 years, the amount of carbon 14 left in the body is half of the original amount.
What I like about this is that you are given a difficulty rating, as well as a mark scheme and also a worked video tutorial. The Practice Exams section takes you to ready made exams on each topic – again with worked solutions.
This also has some harder exams for those students aiming for 6s and 7s and the Past IB Exams section takes you to full video worked solutions to every question on every past paper – and you can also get a prediction exam for the upcoming year.