Radioactive Decay
Grade 11•45 minutes
Learning Objective
I can calculate the half-life of a radioactive substance using its decay rate.
Practice Questions
This lesson includes 9 practice questions to reinforce learning.
View questions preview
1. Define the term "half-life" in the context of radioactive decay.
2. If a radioactive substance has a half-life of 10 hours, how many radioactive nuclei will remain after 30 hours if you start with 1 million nuclei? Show your calculations.
3. Explain how the activity of a radioactive sample changes over time as it decays.
...and 6 more questions
Educational Video
GCSE Physics - Radioactive Decay and Half Life #35
Cognito