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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter Nine: The Smoking Gun, Experimental Signatures.

Multiple Choice Questions

1. Richard Feynman's "sum over paths" theory states that in the double-slit experiment, an electron behaves in what way?
(a) It follows a unique path every time.
(b) The sum of all possible frequencies describes the frequency of the final path taken.
(c) It follows the same path every time.
(d) It follows all possible paths at the same time.

2. Which of the following is one of the major problems in using both quantum physics and general relativity?
(a) Quantum physics predicts that all particles are massless.
(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) General relativity is a wave theory, but quantum physics is a particle theory.

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

4. Which of the following is true of a particle's spin?
(a) It depends on the strength of the local magnetic field.
(b) It increases with each interaction with a particle of greater spin.
(c) It changes depending on the particle's energy.
(d) It is constant for that particle.

5. What is the quantum, or messenger particle, of gravity?
(a) The graviton.
(b) The Einstein boson.
(c) The Calabi-Yau particle.
(d) The gravino.

Short Answer Questions

1. What type of a wave is light?

2. What is the traditional method of testing theories in physics?

3. Quantum chromodynamics concerns quantum mechanics and ____.

4. Which physicist is credited with discovering that light is composed of particles?

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

(see the answer key)

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