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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. What type of motion cannot be felt or sensed by the moving observer?
(a) Accelerating movement.
(b) Orbital movement around a star.
(c) Slowing or decelerating movement.
(d) Constant-velocity movement.

2. What is the fundamental particle, the smallest possible bundle of energy, for the electromagnetic force?
(a) The photon.
(b) The gluon.
(c) The electron.
(d) The neutrino.

3. What is the shape of all particles, at the smallest possible level, according to string theory?
(a) An infinitely long string.
(b) A tangled ball of thin filament.
(c) A one-dimension loop.
(d) A thread of thin strings.

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

5. Black holes are dense and massive cosmological bodies. What unique distinction do they have?
(a) Light cannot escape their gravitational well.
(b) They are the only types of stars that can produce uranium and heavier elements.
(c) They are the only objects that emit gamma rays.
(d) Neutrinos always flow towards them.

Short Answer Questions

1. What discovery about string theory triggered the "superstring revolution"?

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

3. Which of the following is true about the tension within a string?

4. Quantum chromodynamics concerns quantum mechanics and ____.

5. What is the fundamental force responsible for keeping the nucleus of an atom "glued" together?

(see the answer key)

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