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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 did Einstein considered time?
(a) A three-dimensional field.
(b) A physical substance, composed of particles.
(c) The fifth fundamental force of the universe.
(d) A fourth dimension, alongside the three spatial dimensions.

2. Quantum chromodynamics concerns quantum mechanics and ____.
(a) The strong force.
(b) The electromagnetic force.
(c) The weak force.
(d) Gravity.

3. Two theories form the basis of modern physics, but are incompatible with one another. String theory attempts to reconcile these fields. What are these two theories?
(a) General relativity and quantum mechanics.
(b) General relativity and special relativity.
(c) Quantum mechanics and the photoelectric effect.
(d) Gravity and general relativity.

4. 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 more than one year.
(c) It would be exactly equal to one year.
(d) Its reading would be random and meaningless.

5. 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 faint material ejected by black holes.
(d) The mixture of short-lived particles observed after a matter and anti-matter collision.

Short Answer Questions

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

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

3. What are the components of an atomic nucleus?

4. What are the characteristics of a wave?

5. The smallest possible unit of energy is referred to as _____.

(see the answer key)

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