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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. What shape allows for the vibrational patterns that we observe in our universe?
(a) The Kaluza-Klein shape.
(b) The Einstein matrix.
(c) The Calabi-Yau space.
(d) The six-dimensional torus.

2. What did Stephen Hawking prove regarding black holes?
(a) They have electrical charge.
(b) They are the most massive objects in the universe.
(c) The emit radiation.
(d) Light cannot escape from them.

3. Which of the following is true regarding the amount of visible matter in the universe compared to the amount of matter required to cause collapse of the universe?
(a) It makes up about half the mass needed.
(b) There is much more of it than is needed to cause collapse.
(c) It almost exactly equals the mass needed.
(d) It makes up a very small percentage of the mass needed.

4. String theory claims that super particles _____.
(a) Do not exist.
(b) Come in pairs.
(c) Are the only non-string particles.
(d) Are massless.

5. What is a string's winding number?
(a) The number of dimensions it vibrations through.
(b) The ratio of its Planck tension to its tension at rest.
(c) The number of times it is wrapped around a circular dimension.
(d) The number of other strings it is threaded with.

Short Answer Questions

1. What problem of cosmology was the inflationary model created to deal with?

2. What materials were formed during the period of the big bang known as the "primordial nucleosynthesis"?

3. What is one of the difficulties in determining the shape of the Calabi-Yau space?

4. Which of the following is true regarding the force of gravity in string theory?

5. Which of the following best describes the fate of Kaluza-Klein theory?

Short Essay Questions

1. How is the shape of the Calabi-Yau space is determined?

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

3. Describe the big bang according to string theory.

4. What is the string-coupling constant, and why is it important?

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

6. What is the Calabi-Yau space?

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

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

9. What is the major problem preventing string theory from gaining widespread acceptance, and why does this problem persist?

10. How are strings affected by extra dimensions?

(see the answer keys)

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