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This quiz consists of 5 multiple choice and 5 short answer questions through "On the Cliff" – "High Concentration".

Multiple Choice Questions

1. What was Poulsson's answer to the pre-arranged security question, "What did you see walking down the Strand in the early hours of January 1, 1941?"
(a) "A tank rolling down the street."
(b) "Two dogs in a boat."
(c) "Three pink elephants."
(d) "A beaver on a dam."

2. When was Harry Gold born?
(a) May 22, 1915.
(b) July 7, 1917.
(c) December 11, 1910.
(d) March 29, 1908.

3. Where did Klaus Fuchs earn his PhD?
(a) The University of Bristol.
(b) The University of Chicago.
(c) The University of California, Berkeley.
(d) Zurich University.

4. Who did Peter Ivanov send to talk to Robert Oppenheimer and feel out his Communist sensibilities at Berkeley?
(a) Richard Brennan.
(b) Jens Poulsson.
(c) George Eltenton.
(d) Alexander Sachs.

5. Who was Semyon Semyonov's KGB colleague that helped work with him to throw off the scent of the FBI, according to the author in "Rapid Rupture"?
(a) Luis Alvarez.
(b) Robert Oppenheimer.
(c) Alexander Feklisov.
(d) Alexander Sachs.

Short Answer Questions

1. When General Groves first met with the Uranium Committee members in Chicago, how much uranium did they tell him it would take to make an atomic bomb?

2. That former partner did Otto Hahn write first when he first discovered that uranium atoms could be split, according to the author in "The U Business"?

3. Upon landing on the Vemork mission, how long did Poulsson tell his team they had to "reconnoiter the plant, get information on the German guards, and check on the landing site"?

4. What does S.O.E. stand for?

5. Where did Eugene Wigner and Leo Szilard find Albert Einstein in "Finding Einstein"?

(see the answer key)

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