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

2. Under string theory, which of the following is true regarding extra dimensions?
(a) They must all be space-dimensions, or 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 time-dimensions.

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

4. What are the characteristics of a wave?
(a) Frequency, wavelength, and amplitude.
(b) Amplitude and energy.
(c) Energy level, polarity, and speed.
(d) Frequency, polarity, and wavelength.

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

Short Answer Questions

1. In string theory, how do strings interact?

2. In M-theory, what is a two-dimensional oscillating object is called?

3. Which physicist is credited with discovering that light is composed of particles?

4. In M-theory, what role does duality play?

5. What is a virtual string pair?

(see the answer key)

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