The Elegant Universe: Superstrings, Hidden Dimensions, and the Quest For… Test | Mid-Book Test - Medium

Brian Greene
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This test consists of 5 multiple choice questions, 5 short answer questions, and 10 short essay questions.

Multiple Choice Questions

1. Two theories form the basis of modern physics, but are incompatible with one another. String theory attempts to reconcile these fields. What are these two theories?
(a) General relativity and quantum mechanics.
(b) General relativity and special relativity.
(c) Quantum mechanics and the photoelectric effect.
(d) Gravity and general relativity.

2. Which of the following did Einstein considered time?
(a) A fourth dimension, alongside the three spatial dimensions.
(b) The fifth fundamental force of the universe.
(c) A physical substance, composed of particles.
(d) A three-dimensional field.

3. The advent of fermionic vibrational patterns resulted in the creation of _____.
(a) Supersymmetric quantum field theory.
(b) Fermionic resonance theory.
(c) Symmetric antistring theory.
(d) Quantum electroweak theory.

4. How many dimensions did the tiny objects involved in the original statement of string theory have?
(a) Three.
(b) One.
(c) Four.
(d) Two.

5. In 1968 it was discovered that protons and neutrons are composed of which type of particle?
(a) Muons.
(b) Baryons.
(c) Quarks.
(d) Neutrinos.

Short Answer Questions

1. Which of the following qualities must a physical law have in order to be considered symmetric?

2. The first version of string theory did not include any particles of _____.

3. According to Einstein's theory of general relativity, if two objects have a gravitational pull on one another, and one changes its mass or distance from the other, how quickly does the effect of this change travel to the other object?

4. Richard Feynman's "sum over paths" theory states that in the double-slit experiment, an electron behaves in what way?

5. Quantum chromodynamics concerns quantum mechanics and ____.

Short Essay Questions

1. List the four fundamental forces of the universe, their functions, and describe where and at what scales they are most commonly observed.

2. Describe the relationship between the vibration of a string and the particle it represents, including the particle's mass and the tension, wavelength, and amplitude of the string.

3. How does string theory reconcile quantum mechanics and the theory of general relativity?

4. According to Einstein's theory for the photoelectric effect, what is the relationship between the frequency of light and the electrons ejected by the metal?

5. Describe some of the problems with uniting quantum mechanics and general relativity.

6. State Newton's law of gravity.

7. Describe Max Planck's solution to the infinite-energy problem.

8. What is the relationship between wavelength, frequency, and a wave's minimum energy?

9. Describe the structure of an atom.

10. How many string theories are there and how did there come to be multiple theories?

(see the answer keys)

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