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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 physicist is credited with discovering that light is composed of particles?
(a) Planck.
(b) Rutherford.
(c) Einstein.
(d) Maxwell.

2. According to general relativity, the change that an object causes in the fabric of space-time depends directly on _____.
(a) Its direction compared to the observer.
(b) Its density.
(c) Its proximity to another massive body.
(d) Its mass.

3. 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 _____.
(a) The oven contains no energy.
(b) The oven can store more energy the smaller it is.
(c) The oven contains infinite energy.
(d) The oven can only store energy if it has no mass.

4. General relativity is incompatible with _____.
(a) State theory.
(b) Quantum mechanics.
(c) The big bang theory.
(d) The photoelectric effect.

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

Short Answer Questions

1. According to Newton's law of gravity, the strength of the pull between two objects depends on what factors?

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

3. What property of electromagnetic waves did Max Planck solve the thermodynamic problem of the oven by discovering?

4. Edwin Hubble used Einstein's theories to show that the fabric of the universe _____.

5. What is the result when a particle of matter and a particle of antimatter are brought into contact?

(see the answer key)

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