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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 does S.O.E. stand for?
(a) Special Ordinance Elective.
(b) Secret Operations Entity.
(c) Selective Operations Establishment.
(d) Special Operations Executive.

2. On what date was Albert Einstein's letter to the U.S. President warning of Germany's development of an atomic bomb delivered?
(a) April 22, 1938.
(b) October 11, 1939.
(c) September 1, 1939.
(d) November 1, 1939.

3. Who was Robert Oppenheimer's date whom the author describes him abandoning in "Skinny Superhero"?
(a) Lise Meitner.
(b) Melba Phillips.
(c) Ruth Werner.
(d) Sarah Williams.

4. Who was the U.S. President in July of 1939?
(a) Dwight Eisenhower.
(b) Theodore Roosevelt.
(c) Harry Truman.
(d) Franklin D. Roosevelt.

5. What alias did Ruth Werner use in Oxford, England?
(a) Mrs. Brewer.
(b) Mrs. Phillips.
(c) Mrs. Meitner.
(d) Mrs. Anderson.

Short Answer Questions

1. Where was physicist Neils Bohr from?

2. On what date was the meeting between Roosevelt and Churchill in the opening of "On the Cliff"?

3. Who informed Robert Oppenheimer about the German chemists finding the uranium could be split, according to the author in "The U Business"?

4. Who delivered Albert Einstein's letter regarding the potential development of a German atomic bomb to the President of the United States?

5. Who informed Colonel Leslie Groves that he was selected for an important assignment in developing the atomic bomb?

(see the answer key)

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