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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter Twelve, Beyond Strings, In Search of M-Theory.

Multiple Choice Questions

1. What characteristic did Werner Heisenberg discovered that some features of the universe at very small scales, and some properties of particle?
(a) They always increase or decrease by certain increments.
(b) They can change spontaneously, with no external influence.
(c) They are dependant on the velocity of the object being studied.
(d) They cannot be known with complete precision.

2. What is strong-weak duality?
(a) The union of the strong and weak forces at high energies.
(b) A relationship between the strong and weak coupling constants in two different string theories.
(c) The coupling of strong and weak forces in M-theory.
(d) The relationship between bosonic-strong string theories and bosonic-weak theories.

3. How many dimensions are necessitated by M-theory?
(a) Eight.
(b) Eleven.
(c) Nine.
(d) Ten.

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

5. The extra dimension or dimensions in M-theory are needed in order to incorporate _____.
(a) Unwound Calabi-Yau spaces.
(b) Supergravity.
(c) Electroweak duality.
(d) Electromagnetism.

Short Answer Questions

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

2. What is M-theory?

3. What does the string coupling constant govern?

4. Kaluza-Klein theory units which two fundamental forces?

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

(see the answer key)

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