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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter Thirteen, Black Holes, A String/M Theory Perspective.

Multiple Choice Questions

1. How many total dimensions are required by string theory?
(a) Five.
(b) Ten.
(c) Seven.
(d) Eight.

2. Which of the following most accurately describes the state of the universe?
(a) It is collapsing.
(b) It is expanding.
(c) It is about to begin contracting.
(d) It is mostly static.

3. What metric best approximates the scales at which extra dimensions would have a major impact?
(a) One-billionth of a meter.
(b) The Kaluza length.
(c) The nanometer.
(d) The Planck length.

4. What is different about a particle of antimatter, compared to its normal counterpart?
(a) Complementary spin.
(b) Zero mass.
(c) Negative mass.
(d) Opposite electrical charge.

5. According to general relativity, all objects that have mass have what effect on space-time?
(a) They stretch space-time for other very distant objects.
(b) They tear space-time when they travel at near-light speeds.
(c) They warp space-time around them.
(d) They fold space-time as they move past one another.

Short Answer Questions

1. Which of the following is true of a particle's spin?

2. Why are the extra dimensions needed in string theory?

3. There are many possible Calabi-Yau spaces, but only shapes with which of the following characteristics are considered real possibilities?

4. Which of the following is true regarding the mass and spin of a pair of superpartners?

5. Two theories form the basis of modern physics, but are incompatible with one another. String theory attempts to reconcile these fields. What are these two theories?

(see the answer key)

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