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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter Ten, Quantum Geometry.

Multiple Choice Questions

1. Which of the following is true regarding the amount of visible matter in the universe compared to the amount of matter required to cause collapse of the universe?
(a) It makes up about half the mass needed.
(b) There is much more of it than is needed to cause collapse.
(c) It makes up a very small percentage of the mass needed.
(d) It almost exactly equals the mass needed.

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?
(a) No time would pass at all.
(b) Time would pass slowly compared to an observer at rest.
(c) Time would pass very quickly compared to an observer at rest.
(d) The passage of time could not be predicted.

3. What is quantum foam?
(a) The rapidly changing spatial distortions at the Planck length.
(b) The mixture of short-lived particles observed after a matter and anti-matter collision.
(c) Particles that are scattered from their normal positions by quantum interference.
(d) The faint material ejected by black holes.

4. Quantum chromodynamics concerns quantum mechanics and ____.
(a) The strong force.
(b) Gravity.
(c) The electromagnetic force.
(d) The weak force.

5. What is different about a particle of antimatter, compared to its normal counterpart?
(a) Negative mass.
(b) Complementary spin.
(c) Zero mass.
(d) Opposite electrical charge.

Short Answer Questions

1. String theory claims that super particles _____.

2. Which of the following is true regarding experimental evidence for super particles?

3. According to string theory, why do different particles have different properties?

4. In quantum mechanics, what is symmetry breaking?

5. What type of motion cannot be felt or sensed by the moving observer?

(see the answer key)

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