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

2. Regarding mirror-symmetry, Greene's work proved that _____.
(a) It is a part of string theory.
(b) It occurs only below the Planck length.
(c) It is only valid under special circumstances.
(d) It is invalid.

3. Which of the following methods has been used to determine the shape of the Calabi-Yau space?
(a) Perturbation theory.
(b) Matrix manipulation.
(c) The finite elements method.
(d) Discrete mathematics.

4. According to the standard model of the big bang, which of the following is true of the four fundamental forces during the first moments of the universe?
(a) They were not uniform throughout space.
(b) They were divided into eight unidentified forces.
(c) They were all melded together.
(d) They were "evaporated" in the high temperature, and didn't interact with space-time.

5. Under string theory, which of the following is true regarding extra dimensions?
(a) They must all be time-dimensions.
(b) They must all be space-dimensions.
(c) Some or all of them might be time-dimensions.
(d) They must all be space-dimensions, or they must all be time-dimensions.

Short Answer Questions

1. How are black holes are widely believed to have originated?

2. Which team of researchers discovered the process for altering Calabi-Yau spaces by rupturing them?

3. What is the scientific state of the "multiverse" theory?

4. As a string becomes wrapped, which of its properties increases?

5. Which of the following is true regarding the tearing of space-time according to string theory?

Short Essay Questions

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

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

3. Describe the phenomenon of winding in string theory.

4. What is mirror symmetry, and what is its relevance to string theory?

5. In the context of the big bang, what is symmetry breaking?

6. Describe the history of space-time tears in physics.

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

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

9. Are the extra-dimensions demanded by string theory, space or time dimensions? How are those dimensions experienced in everyday life?

10. What is the horizon problem in cosmology? How was it resolved?

(see the answer keys)

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