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This test consists of 15 multiple choice questions and 5 short answer questions.

Multiple Choice Questions

1. According to Heisenberg, how do people usually react to Bohr?
(a) With mild admiration
(b) With mistrust
(c) With annoyance
(d) With love

2. When did Heisenberg’s most important visit to Copenhagen take place?
(a) 1941
(b) 1953
(c) 1924
(d) 1947

3. What is the reason for the frequency of Bohr’s skiing and sailing trips?
(a) He is looking for distraction
(b) The areas are occupied by the Germans
(c) He has been busy with his science
(d) He needs the relaxation

4. What does Heisenberg imply Weizsacker might have told Bohr?
(a) He must hide his work from Margrethe
(b) Heisenberg wants to make amends
(c) He would find protection at the German embassy
(d) He needs to flee Denmark

5. What fallacious claim did Bohr initially make about fission?
(a) It cannot be used to produce weapons
(b) Germany will never understand it
(c) The Americans must master it
(d) Cadmium is unnecessary

6. What did Bohr agree not to talk about before Heisenberg arrived?
(a) Personal matters
(b) Politics
(c) Margrethe
(d) Science

7. What does fission produce BEFORE the final product?
(a) Plutonium
(b) Mercury
(c) Uranium
(d) Neptunium

8. What did Heisenberg achieve in 1924?
(a) He got married
(b) He finished his doctorate
(c) He learned about the atom
(d) He graduated from college

9. What train did Heisenberg take in 1941?
(a) He did not take a train
(b) The night train
(c) The first train of the day
(d) The last train of the day

10. How long does Heisenberg and Bohr’s present walk in Act I last?
(a) Five minutes
(b) Ten minutes
(c) An hour
(d) Half an hour

11. In what month did the 1914 meeting actually take place?
(a) December
(b) September
(c) October
(d) November

12. Why are the consequences for Germany of Bohr’s explanation for the number of Heisenerg’s coveted object in Germany?
(a) A famine is taking place
(b) The science is left to inferior scientists
(c) They have a smaller population
(d) German knowledge is less widespread

13. What explanation does Bohr give for the number of Heisenberg’s coveted object in Germany?
(a) German funding has been cut
(b) German publications are printing less work
(c) The birthrate goes down during wartime
(d) The Jewish scientists have fled the country

14. When did Heisenberg try and fail to see the Bohrs for the second time?
(a) 1939
(b) 1940
(c) 1937
(d) 1938

15. Why does Bohr think that scientists are still working on fission?
(a) There is magic in it
(b) He does not think that they are working on it
(c) There is a lot left to be discovered
(d) His early work was erroneous

Short Answer Questions

1. What is fired in fission?

2. How long did Bohr estimate it would take to produce one gram of U-235?

3. Who accompanied Heisenberg on his 1947 trip to Copenhagen?

4. What is the main barrier between Heisenberg and Bohr at the beginning of the former’s visit?

5. With whom did Bohr work that Heisenberg did not?

(see the answer keys)

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