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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 6, Nothing but Music, The Essentials of Superstring Theory.

Multiple Choice Questions

1. Which of the follow is true of objects with which string theory is concerned?
(a) The objects are purely imaginary.
(b) They are all really Calabi-Yau shapes.
(c) It concerns one-dimensional strings and nothing else.
(d) They include strings and other objects as well.

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

3. How are the wavelength of a string's vibration and the mass of the particle it represents related?
(a) If there is a wavelength above the Planck length, the particle is massless.
(b) The longer the wavelength, the more massive the particle.
(c) The longer the wavelength, the less massive the particle.
(d) Wavelength and mass are not related.

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

5. 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?
(a) At exactly the speed of light.
(b) Near the speed of light, faster for more massive objects.
(c) Instantaneously.
(d) Near the speed of light, faster for lighter objects.

Short Answer Questions

1. What is the result when a particle of matter and a particle of antimatter are brought into contact?

2. According to special relativity, which of the following can move faster than light?

3. Which of the following accurately describes the phenomenon of "quantum tunneling"?

4. What type of a wave is light?

5. What characteristic did Werner Heisenberg discovered that some features of the universe at very small scales, and some properties of particle?

(see the answer key)

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