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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 spin do all particles of matter have?
(a) 3/2.
(b) 1.
(c) 1/2.
(d) 2.

2. According to string theory, which of the following cannot occur during the collapse of the universe?
(a) It cannot collapse into one of the extra dimensions.
(b) It cannot exert gravitational pull greater than the Planck tension.
(c) It cannot be reduced to a size smaller than the Planck length.
(d) It cannot lose energy.

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

4. General relativity is incompatible with _____.
(a) Quantum mechanics.
(b) State theory.
(c) The big bang theory.
(d) The photoelectric effect.

5. According to general relativity, which of the following is said to warp or bend space-time?
(a) Gravity and electromagnetic fields.
(b) Accelerated motion and gravity.
(c) Accelerated motion and orbital motion.
(d) Constant, relativistic speed motion.

Short Answer Questions

1. What metric best approximates the scales at which extra dimensions would have a major impact?

2. According to special relativity, which of the following is true about the passage of time for an observer moving near the speed of light?

3. Which of the following most accurately describes the state of the universe?

4. What is the fundamental force responsible for keeping the nucleus of an atom "glued" together?

5. Who first proposed the existence of extra dimensions?

(see the answer key)

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