Half-life & Radioactive Decay WB Quiz
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- Question 1 of 10
1. Question
The graph shows the radioactive decay of a bone that is found to contain 1/4 of the carbon-14 found in living animals today.
Approximately how old is the bone?
- Question 2 of 10
2. Question
What is Half-life?
- Question 3 of 10
3. Question
The half-life of strontium-90 is 25 years. How much strontium-90 will remain after 100 years if the initial amount is 4.0 g?
- Question 4 of 10
4. Question
The half life of iodine-131 is 8 days. What percentage of an iodine-131 sample will remain after 40 days?
- Question 5 of 10
5. Question
After 4 half-lives, 1g of a sample of Krypton-85 remains unchanged. Â What was the original mass of the sample?
- Question 6 of 10
6. Question
What is the half-life of iodine-131?
- Question 7 of 10
7. Question
What percent of carbon-14 would be left after 11,460 years?
- Question 8 of 10
8. Question
If one-eigth of the carbon-14 is remaining then how many half-lives have passed?
- Question 9 of 10
9. Question
What percent of carbon-14 would be left after 5,730 years?
- Question 10 of 10
10. Question
What percent of iodine-131 remains after approximately 27 days?
