Exam-style question
Try this first
What does an increase in activity indicate about a radioactive sample?.
- A.The sample is becoming more stable.
- B.The sample is undergoing more decay events.
- C.The sample has absorbed more radiation.
- D.The sample is losing mass.
Model answer
What a good answer should say
- The sample is undergoing more decay events.
Explanation
Why this works
The evidence shows that activity is defined as the rate of decay events occurring in a radioactive sample. An increase in activity implies that more decay events are happening per unit time.
Therefore, the conclusion is that the sample is undergoing more decay events.
Common mistake
No common mistake is linked to this question yet.