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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. 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) The sum of all possible frequencies describes the frequency of the final path taken.
(d) It follows all possible paths at the same time.

2. In M-theory, what role does duality play?
(a) It allows space-tearing flop transitions to extend into extra dimensions.
(b) It shows that the five theories are connected.
(c) It links electromagnetism and gravity.
(d) It helps to incorporate general relativity.

3. 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 relationship between bosonic-strong string theories and bosonic-weak theories.
(d) The coupling of strong and weak forces in M-theory.

4. What is supergravity?
(a) The gravitational force felt at the Planck scale.
(b) The relativistic effect of two particles occupying the same location.
(c) A combination of general relativity and supersymmetry.
(d) The gravitational conditions inside a black hole.

5. In M-theory, what is a two-dimensional oscillating object is called?
(a) A two-string.
(b) A flop.
(c) A blob.
(d) A membrane.

Short Answer Questions

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

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 _____.

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

4. What characteristic did Werner Heisenberg discovered that some features of the universe at very small scales, and some properties of particle?

5. How does the number of extra "curled up" dimensions affect the vibration of strings?

(see the answer key)

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