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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 6, Nothing but Music, The Essentials of Superstring Theory.

Multiple Choice Questions

1. According to special relativity, which of the following is true about the passage of time for an observer moving near the speed of light?
(a) Time would pass very quickly compared to an observer at rest.
(b) Time would pass slowly compared to an observer at rest.
(c) No time would pass at all.
(d) The passage of time could not be predicted.

2. What type of a wave is light?
(a) A photonic wave.
(b) An electromagnetic wave.
(c) A gravitational wave.
(d) An electrical wave.

3. What is the quantum, or messenger particle, of the weak force?
(a) The neutrino.
(b) The weak gauge boson.
(c) The up quark.
(d) The Higgs boson.

4. Which of the following is true about the tension within a string?
(a) It cannot be said truly to exist.
(b) It is very low, less than a few pounds.
(c) It has no bearing on a string's energy.
(d) It is very high, more than a billion tons.

5. What is the fundamental force responsible for keeping the nucleus of an atom "glued" together?
(a) Quantum-tunneling force.
(b) Potential electrical force.
(c) The nuclear-strong force.
(d) Gravitational force.

Short Answer Questions

1. According to Newton's law of gravity, the strength of the pull between two objects depends on what factors?

2. What does the quantum electroweak theory state about the two fundamental forces it describes?

3. How many dimensions did the tiny objects involved in the original statement of string theory have?

4. Why are the fluctuations that quantum physics predicts not observable in everyday life?

5. In 1968 it was discovered that protons and neutrons are composed of which type of particle?

(see the answer key)

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