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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. What is quantum foam?
(a) Particles that are scattered from their normal positions by quantum interference.
(b) The rapidly changing spatial distortions at the Planck length.
(c) The mixture of short-lived particles observed after a matter and anti-matter collision.
(d) The faint material ejected by black holes.

2. When the distance between two objects is doubled, what happens to the strength of the gravitational pull between them?
(a) It diminishes to one-fourth its original value.
(b) It quadruples.
(c) It is unchanged.
(d) It diminishes to one-half its original value.

3. Which of the following is one of the major problems in using both quantum physics and general relativity?
(a) General relativity is a wave theory, but quantum physics is a particle theory.
(b) At small scales, quantum physics predicts uncertainty, but general relativity requires certainty.
(c) General relativity is time-dependant, quantum physics is a steady-state theory.
(d) Quantum physics predicts that all particles are massless.

4. Edwin Hubble used Einstein's theories to show that the fabric of the universe _____.
(a) Is not flat, it is curved, either inwards or outwards.
(b) Is uniform in all places and times.
(c) Is not static, it must either be shrinking or expanding.
(d) Has a finite boundary.

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

Short Answer Questions

1. The advent of fermionic vibrational patterns resulted in the creation of _____.

2. What is the shape of all particles, at the smallest possible level, according to string theory?

3. What is the quantum, or messenger particle, of gravity?

4. What property did the double-slit experiment demonstrate that light has?

5. In Einstein's famous equation, E=mc^2, what does "c" represent?

(see the answer key)

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