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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter Thirteen, Black Holes, A String/M Theory Perspective.

Multiple Choice Questions

1. The extra dimension or dimensions in M-theory are needed in order to incorporate _____.
(a) Unwound Calabi-Yau spaces.
(b) Electroweak duality.
(c) Electromagnetism.
(d) Supergravity.

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

3. In which particle was spin first discovered?
(a) The neutron.
(b) The electron.
(c) The proton.
(d) The photon.

4. 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 a very small percentage of the mass needed.
(b) It almost exactly equals the mass needed.
(c) It makes up about half the mass needed.
(d) There is much more of it than is needed to cause collapse.

5. Which of the following theory was NOT developed in order to try to resolve the conflicts between quantum mechanics and general relativity?
(a) Inflationary theory.
(b) Quantum electrodynamics.
(c) Quantum field theory.
(d) Superstring theory.

Short Answer Questions

1. Quantum electroweak theory concerns quantum mechanics and _____.

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

3. Which of the following best describes a wormhole?

4. If a clock were accelerated to nearly the speed of light for a year's time, which of the following would be true of its reading at the end of that time?

5. What is one of the difficulties in determining the shape of the Calabi-Yau space?

(see the answer key)

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