1. Lesson 2
LT: I can use half life to determine how long nuclear waste is radioactive.

2. 3 minutes
A beta particle and gamma radiation is produced by the decay of lead Write the nuclear reaction.

3. 2 minutes
A beta particle and gamma radiation is produced by the decay of lead Write the nuclear reaction.

4. 1 minute
A beta particle and gamma radiation is produced by the decay of lead Write the nuclear reaction.

5. 10
seconds

6. 9
seconds

7. 8
seconds

8. 7
seconds

9. 6
seconds

10. 5
seconds

11. 4
seconds

12. 3
seconds

13. 2
seconds

14. 1
second

15. Time for Class!

16. Lesson 2
You have three minutes to answer the following question.

17. 3 minutes
A medical institution requests 1 g of bismuth-214, which has a half life of 20 min. What is the minimum amount of bismuth-214 that must be prepared if the shipping time is 2 h?

18. 2 minutes
A medical institution requests 1 g of bismuth-214, which has a half life of 20 min. What is the minimum amount of bismuth-214 that must be prepared if the shipping time is 2 h?

19. 1 minute
A medical institution requests 1 g of bismuth-214, which has a half life of 20 min. What is the minimum amount of bismuth-214 that must be prepared if the shipping time is 2 h?

20. 10
seconds

21. 9
seconds

22. 8
seconds

23. 7
seconds

24. 6
seconds

25. 5
seconds

26. 4
seconds

27. 3
seconds

28. 2
seconds

29. 1
second

30. Time for Class!