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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 4, Microscopic Weirdness.

Multiple Choice Questions

1. What are the components of an atomic nucleus?
(a) Electrons and neutrons.
(b) Protons and neutrons.
(c) Photons and electrons.
(d) Protons and electrons.

2. What type of motion cannot be felt or sensed by the moving observer?
(a) Constant-velocity movement.
(b) Slowing or decelerating movement.
(c) Accelerating movement.
(d) Orbital movement around a star.

3. According to Newton's law of gravity, the strength of the pull between two objects depends on what factors?
(a) Their densities and the strength of the gravitational field they occupy.
(b) Their masses and potential energies.
(c) The distance between them and their average atomic numbers.
(d) Their masses and the distance between them.

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

5. What is the photoelectric effect?
(a) Electrons follow quantum paths made by photons.
(b) When light shines on metals, the metals emit electrons.
(c) Photons can spontaneously decay into electrons in powerful magnetic fields.
(d) Electrons and photons only interact if they have the same frequency.

Short Answer Questions

1. According to special relativity, which of the following can move faster than light?

2. What rule did Max Planck discover the electromagnetic waves bounded in a container, such as an oven, must follow?

3. Which of the following is not true according to special relativity?

4. Black holes are dense and massive cosmological bodies. What unique distinction do they have?

5. According to special relativity, which of the following is true about the passage of time for an observer moving near the speed of light?

(see the answer key)

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