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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. What is one possible way that the three dimensions we observe could have been "stretched out"?
(a) The big bang.
(b) Quantum fluctuations.
(c) A false vacuum event.
(d) Vacuum energy.

2. As a string becomes wrapped, which of its properties increases?
(a) Its amplitude.
(b) Its spin.
(c) Its energy.
(d) Its wavelength.

3. Which of the following is not true according to special relativity?
(a) All objects move at a constant speed through space-time.
(b) No object can move faster than the speed of light.
(c) Time does not pass for objects that are perfectly at rest.
(d) Motion and time are relative; they depend on the observer.

4. What is the Planck tension?
(a) The vacuum-energy of a matter and anti-matter string pair.
(b) The attraction felt by a string through the strong force.
(c) The pull between strings at the Planck length.
(d) The typical tension in a string.

5. Which of the following is closest to the Planck length?
(a) A millionth of a billionth of a billionth of a billionth of a centimeter.
(b) A billionth of a billionth of a centimeter.
(c) A thousandth of a centimeter.
(d) A millionth of a centimeter.

Short Answer Questions

1. What type of a wave is light?

2. What spin do all particles of matter have?

3. General relativity is incompatible with _____.

4. Which of the following theory was NOT developed in order to try to resolve the conflicts between quantum mechanics and general relativity?

5. Kaluza's theory suggested that electromagnetism was carried by ripples in _____.

(see the answer key)

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