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. What is the quantum, or messenger particle, of the strong force?
(a) The hadron.
(b) The gluon.
(c) The muon.
(d) The baryon.

2. According to Einstein's theory of general relativity, if two objects have a gravitational pull on one another, and one changes its mass or distance from the other, how quickly does the effect of this change travel to the other object?
(a) Near the speed of light, faster for lighter objects.
(b) At exactly the speed of light.
(c) Near the speed of light, faster for more massive objects.
(d) Instantaneously.

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

4. Which of the following is a correct statement, based on the theory of special relativity?
(a) Energy only exists relative to mass.
(b) Time is always the same to all observers, but space is not.
(c) Movement can only be measured relative to very massive objects, such as stars.
(d) Time and space are not experienced exactly the same by all observers

5. 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) Gravity and general relativity.
(c) General relativity and special relativity.
(d) Quantum mechanics and the photoelectric effect.