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This test consists of 5 multiple choice questions, 5 short answer questions, and 10 short essay questions.

Multiple Choice Questions

1. Which of the following is true regarding the tearing of space-time according to general relativity?
(a) It is not known if space-time can tear.
(b) A tear would destroy the universe.
(c) It can tear under special circumstances.
(d) It cannot tear.

2. In M-theory, what is a two-dimensional oscillating object is called?
(a) A two-string.
(b) A flop.
(c) A membrane.
(d) A blob.

3. What type of a string can be massless?
(a) An unwrapped string.
(b) A non-oscillating string.
(c) A string with more than one dimension.
(d) A non-vibrating.

4. Tears in space-time are technically termed _____.
(a) Discrete abrogation events.
(b) Zero-point alignments.
(c) Flops.
(d) Topology-changing transitions.

5. When a Calabi-Yau space collapses, it comes back as a space. What distinction does it have?
(a) It has one fewer dimensions.
(b) It has mirror-symmetry with its old shape.
(c) It has one less hole.
(d) It has no shielding against tears in space-time.

Short Answer Questions

1. When the universe is at its smallest possible size, which other property is also at its maximum?

2. What is a virtual string pair?

3. What metric best approximates the scales at which extra dimensions would have a major impact?

4. Why can the objects predicted by string theory not be observed?

5. What is the importance of the string-coupling constant?

Short Essay Questions

1. What is the relative composition of matter in the universe?

2. How are strings affected by extra dimensions?

3. Describe the nature and importance of the procedure discovered by Yau and Tian.

4. Describe the difficulties in studying the entropy of a black hole.

5. What is a virtual string pair, and how is it formed?

6. Greene suggests that black holes are very similar to, and might in fact be, elementary particles. What evidence supports this suggestion?

7. Why are superparticles important to string theory, and how has research into these particles affected the field of string theory?

8. What is a wormhole, and how is it formed?

9. What is the origin of M-theory, and what are its basic characteristics?

10. What is the relationship between the elementary particles and the Calabi-Yau space?

(see the answer keys)

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