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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. Who first proposed the existence of extra dimensions?
(a) Kaluza.
(b) Hawking.
(c) Maxwell.
(d) Einstein.
2. Under string theory, which of the following is true regarding extra dimensions?
(a) They must all be time-dimensions.
(b) Some or all of them might be time-dimensions.
(c) They must all be space-dimensions, or they must all be time-dimensions.
(d) They must all be space-dimensions.
3. What property of electromagnetic waves did Max Planck solve the thermodynamic problem of the oven by discovering?
(a) There are infinite numbers of waves, but each has an infinitely small energy.
(b) Waves are really particles.
(c) They can penetrate or "tunnel" through any surface.
(d) They have a minimum energy, proportional to their frequency.
4. How does the number of extra "curled up" dimensions affect the vibration of strings?
(a) More dimensions allow for string with length in more than one direction.
(b) String vibration is not affected by additional dimensions.
(c) More dimensions require more energy for the same vibrational pattern.
(d) More dimensions provide more ways to vibrate.
5. The wave-like nature of the electron means that after a collision, _____.
(a) The electron has a range of possible locations.
(b) The electron can never be located again.
(c) The electron will double in frequency.
(d) The electron will disperse into a wave of energy.
Short Answer Questions
1. What is strong-weak duality?
2. Kaluza's theory suggested that electromagnetism was carried by ripples in _____.
3. What metric best approximates the scales at which extra dimensions would have a major impact?
4. What characteristic did Werner Heisenberg discovered that some features of the universe at very small scales, and some properties of particle?
5. What are the characteristics of a wave?
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This section contains 377 words (approx. 2 pages at 300 words per page) |
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