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

2. Quantum physics began with the study of the energy inside a heated, closed container, such as an oven. The problem with theories at the time was that they predicted that _____.
(a) The oven contains infinite energy.
(b) The oven can only store energy if it has no mass.
(c) The oven contains no energy.
(d) The oven can store more energy the smaller it is.

3. Who posited the existence of M-theory?
(a) Greene.
(b) Witten.
(c) Plesser.
(d) Brandenberger.

4. Richard Feynman's "sum over paths" theory states that in the double-slit experiment, an electron behaves in what way?
(a) It follows a unique path every time.
(b) It follows the same path every time.
(c) It follows all possible paths at the same time.
(d) The sum of all possible frequencies describes the frequency of the final path taken.

5. The wave-like nature of the electron means that after a collision, _____.
(a) The electron will double in frequency.
(b) The electron can never be located again.
(c) The electron has a range of possible locations.
(d) The electron will disperse into a wave of energy.

Short Answer Questions

1. What is supergravity?

2. Under string theory, which of the following is true regarding extra dimensions?

3. The extra dimension or dimensions in M-theory are needed in order to incorporate _____.

4. What does the string coupling constant govern?

5. How many dimensions are necessitated by M-theory?

(see the answer key)

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