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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 shape allows for the vibrational patterns that we observe in our universe?
(a) The Calabi-Yau space.
(b) The Einstein matrix.
(c) The six-dimensional torus.
(d) The Kaluza-Klein shape.

2. What property did the double-slit experiment demonstrate that light has?
(a) It has a finite energy level at all frequencies.
(b) It has an infinite number of possible frequencies.
(c) It behaves as a wave.
(d) It can be bent by gravity fields.

3. What is one possible way that the three dimensions we observe could have been "stretched out"?
(a) Vacuum energy.
(b) A false vacuum event.
(c) Quantum fluctuations.
(d) The big bang.

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

5. The smallest possible unit of energy is referred to as _____.
(a) A muon.
(b) A quantum.
(c) A photon.
(d) A quark.

Short Answer Questions

1. What does the string coupling constant govern?

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

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

4. What is supergravity?

5. What is M-theory?

(see the answer key)

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