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

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

3. What is the photoelectric effect?
(a) Electrons follow quantum paths made by photons.
(b) Photons can spontaneously decay into electrons in powerful magnetic fields.
(c) When light shines on metals, the metals emit electrons.
(d) Electrons and photons only interact if they have the same frequency.

4. What is M-theory?
(a) A theory that would unite all branches of string theory.
(b) An open-ended string theory.
(c) A combination of general relativity and string theory.
(d) A specialized version of the "Heterotic A" string theory.

5. Kaluza-Klein theory units which two fundamental forces?
(a) The strong force and the weak force.
(b) Gravity and the strong force.
(c) Electromagnetism and the weak force.
(d) Gravity and electromagnetism.

Short Answer Questions

1. Richard Feynman's "sum over paths" theory states that in the double-slit experiment, an electron behaves in what way?

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

3. Kaluza's theory suggested that electromagnetism was carried by ripples in _____.

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

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

(see the answer key)

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