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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter Seven, The Super in Superstring.

Multiple Choice Questions

1. How are the amplitude of a string's vibration and the mass of the particle it represents related?
(a) The higher the amplitude, the more massive the particle.
(b) Amplitude and mass are not related.
(c) The higher the amplitude, the less massive the particle.
(d) If there is a non-zero amplitude, the particle is massless.

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

3. According to special relativity, which of the following is true about the passage of time for an observer moving near the speed of light?
(a) Time would pass very quickly compared to an observer at rest.
(b) No time would pass at all.
(c) The passage of time could not be predicted.
(d) Time would pass slowly compared to an observer at rest.

4. According to general relativity, the change that an object causes in the fabric of space-time depends directly on _____.
(a) Its density.
(b) Its proximity to another massive body.
(c) Its mass.
(d) Its direction compared to the observer.

5. In quantum mechanics, what is symmetry breaking?
(a) The primary reason that the theory is incompatible with general relativity.
(b) When two fused fundamental forces become separated out.
(c) When an asymmetrical matter and anti-matter pair is created.
(d) When the symmetry between a electrical and magnetic field is broken at high energy levels.

Short Answer Questions

1. Which of the following is NOT an actual version of string theory?

2. The wave-like nature of the electron means that after a collision, _____.

3. What characteristic of the string determines the properties of the particle it represents?

4. In 1968 it was discovered that protons and neutrons are composed of which type of particle?

5. Which of the following is correct about the speed at which light moves?

(see the answer key)

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