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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 5, The Need for a New Theory, General Relativity vs. Quantum Mechanics.

Multiple Choice Questions

1. Which of the following is not one of the four fundamental forces of the universe?
(a) The photoelectric force.
(b) Gravity.
(c) The nuclear-weak force.
(d) The electromagnetic force.

2. If a clock were accelerated to nearly the speed of light for a year's time, which of the following would be true of its reading at the end of that time?
(a) It would be less than one year.
(b) It would be exactly equal to one year.
(c) It would be more than one year.
(d) Its reading would be random and meaningless.

3. What type of a wave is light?
(a) An electrical wave.
(b) A photonic wave.
(c) An electromagnetic wave.
(d) A gravitational wave.

4. The smallest possible unit of energy is referred to as _____.
(a) A muon.
(b) A quark.
(c) A photon.
(d) A quantum.

5. What characteristic of the string determines the properties of the particle it represents?
(a) Its length.
(b) The number of other strings with which it is threaded.
(c) Its mass.
(d) Its frequency of vibration.

Short Answer Questions

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

2. Quantum physics began with the study of the energy inside a heated, closed container, such as an oven. The problem with theories at the time was that they predicted that _____.

3. According to general relativity, which of the following is said to warp or bend space-time?

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

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

(see the answer key)

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