Modelling Radioactive Decay (VCE SSCE Physics): Quizzes
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Practise the questions
10 questions from this quiz
After 2 half-lives, what fraction of the original radioactive material remains?
After 2 half-lives, what fraction of the original radioactive material remains?
One-quarter
Which factor does NOT affect the half-life of a radioactive isotope?
Which factor does NOT affect the half-life of a radioactive isotope?
Temperature
A bone has rac{1}{8} of original C-14. If C-14 half-life is 5730 y, how old is it?
A bone has rac{1}{8} of original C-14. If C-14 half-life is 5730 y, how old is it?
17,190 years
What is the maximum age radiocarbon dating can reliably determine?
What is the maximum age radiocarbon dating can reliably determine?
55,000-60,000 years
What does one becquerel (Bq) represent?
What does one becquerel (Bq) represent?
1 disintegration per second
In a dice simulation of decay, what fraction typically shows a 6 each roll?
In a dice simulation of decay, what fraction typically shows a 6 each roll?
One-sixth
What is the half-life of technetium-99m, the most widely used medical isotope?
What is the half-life of technetium-99m, the most widely used medical isotope?
6.0 hours
What percentage of average annual radiation comes from radon gas?
What percentage of average annual radiation comes from radon gas?
40%
What can be predicted about radioactive decay?
What can be predicted about radioactive decay?
Behavior of large groups
Why do medical tracers require short half-lives?
Why do medical tracers require short half-lives?
To minimize radiation exposure