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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. Which physicist is credited with discovering that light is composed of particles?
(a) Maxwell.
(b) Planck.
(c) Einstein.
(d) Rutherford.

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

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

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

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

Short Answer Questions

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

2. How many total dimensions are required by string theory?

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

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

5. What does the string coupling constant govern?

(see the answer key)

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