Radioisotope Quiz

radiocarbon curve

PS2J-b: I can use a decay curve for a radioactive isotope to determine the age of the sample.

  1. Using the C-14 decay curve estimate the following. The age of the sample is :
    1. _________ years when 25% of the C-14 is left.
    2. _________ years when 5% of the C-14 is left.
    3. _________ years after one half life.
    4. _________ years after 3 half-lives.

  2. radioisotope curveLabel the x-axis of this radioisotope decay curve for Be-11 which has a half-life of 14 seconds.