Nuclear Physics

5. If you had a rock that was 1/8 U-235 and 7/8 Fe, then the rock is _____ years old.
7. A form a hydrogen that has one neutron.
9. My teacher calls himself _____.
10. What is a beta particle?
12. How many protons can share an energy level?
15. Protons and neutrons are _____.
16. What is radioactive debris (extra neutrons) called?
17. How many nucleons can their be in a nucleus?
18. What is the half-life of Beryllium-7?
19. Small atoms release energy in _____ reactions.

1. A form of hydrogen that has two neutrons.
2. What radioactive element was used to show that continental drift was real?
3. What unit is used to measure radiation?
4. Each radioactive isotope has a different _____.
6. What is the half-life of a neutron?
8. Different forms of elements that have a different number of neutrons but the same number of protons.
11. What radioactive element would you look for if you were determining the age of a fossil?
13. This force is strong and short ranged.
14. What is the decay product of He-5?
16. Large atoms release energy in _____ reactions.