Fission and Fusion Check for Understanding

Name
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
Period \_\_\_

1.  The nucleus of an atom is made up of \_\_\_\_\_\_\_\_\_\_ and
    \_\_\_\_\_\_\_\_\_\_\_.

2.  Einstein's equation E = mc^2^ tells us that mass is really a form of
    \_\_\_\_\_\_\_\_\_\_.

3.  The idea that energy is conserved means that energy cannot be
    \_\_\_\_\_\_\_\_\_\_ or \_\_\_\_\_\_\_\_\_\_\_\_.

4.  Energy CAN be changed from one \_\_\_\_\_\_\_\_ to another.

5.  In the equation E = mc^2^, E is the variable for
    \_\_\_\_\_\_\_\_\_\_\_\_\_\_ and it is measured in units of
    \_\_\_\_\_\_\_\_\_\_\_\_\_\_.

6.  In the equation E = mc^2^, m is the variable for
    \_\_\_\_\_\_\_\_\_\_\_\_\_\_ and it is measured in units of
    \_\_\_\_\_\_\_\_\_\_\_\_\_\_.

7.  In the equation E = mc^2^, c is the
    \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ and has a
    value of 3 x 10^8^ m/s.

8.  The 1 g \_\_\_\_\_\_\_\_\_ of a dollar bill is equivalent to 12
    kilotons of TNT if it could all be converted to energy.

9.  Fiss means to \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_.

10. When an atom undergoes a fission reaction, a
    \_\_\_\_\_\_\_\_\_\_\_\_ atom is broken in to two or more
    \_\_\_\_\_\_\_\_\_\_\_\_\_ atoms.

11. Fission is also called \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ an atom.

12. When an atom breaks apart, the mass of the products is
    \_\_\_\_\_\_\_\_\_\_\_\_\_\_ the mass of the original atom.

13. The mass "lost" in the fission reaction was actually converted into
    \_\_\_\_\_\_\_\_\_.

14. When one fission reaction causes one, two or three more fission
    reactions which then cause more fission reactions and so on, a
    \_\_\_\_\_\_\_\_\_ reaction occurs.

15. A controlled fission reaction is used in nuclear power plants to
    produce \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_.

16. An uncontrolled fission reaction can be used as a
    \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ releasing the energy created in the
    reaction to cause destruction.

17. Fuse means to \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_.

18. During a fusion reaction, two \_\_\_\_\_\_\_\_\_\_ nuclei collide to
    form one \_\_\_\_\_\_\_\_\_\_\_ nucleus.

19. In lab experiments, deuterium and tritium are
    \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ to collide at high speeds and
    form a helium nucleus and a proton.

20. The mass of the helium nucleus and proton formed in a fusion
    reaction is \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ the mass of the
    original deuterium and tritium.

21. The mass "lost" in the fusion reaction was actually changed into
    \_\_\_\_\_\_\_\_\_\_.

22. The \_\_\_\_\_\_\_ releases energy formed in proton-proton (fusion)
    chain reactions.

23. A good use for fusion reactions MIGHT be a fusion reactor used to
    create cleaner, inexpensive
    \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_.

24. An evil use for fusion reactions is hydrogen or thermonuclear
    weapons which are much more \_\_\_\_\_\_\_\_\_\_\_\_\_\_ than atomic
    bombs.

25. A-bomb stands for \_\_\_\_\_\_\_\_\_\_\_\_\_\_ bomb and releases
    energy from a \_\_\_\_\_\_\_\_\_\_\_\_\_\_ reaction.

26. H-bomb stands for \_\_\_\_\_\_\_\_\_\_\_\_\_\_ bomb and releases
    energy from a \_\_\_\_\_\_\_\_\_\_\_\_\_\_ reaction.

27. The type of bombs dropped at the end of World War II on Hiroshima
    and Nagasaki were \_\_\_\_\_\_\_\_\_\_\_\_\_\_ bombs.

28. The type of bomb that has only been tested but never used in warfare
    is the \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ bomb.

29. Draw a picture representing a fission reaction.

30\. Draw a picture representing a fusion reaction.