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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. According to Newton's theory of gravity, 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) Instantaneously.
(b) At exactly the speed of light.
(c) Near the speed of light, faster for more massive objects.
(d) Near the speed of light, faster for lighter objects.

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

3. According to special relativity, which of the following is true about the passage of time for an observer moving near the speed of light?
(a) Time would pass slowly compared to an observer at rest.
(b) Time would pass very quickly compared to an observer at rest.
(c) The passage of time could not be predicted.
(d) No time would pass at all.

4. According to special relativity, which of the following can move faster than light?
(a) Neutrinos.
(b) Quantum data.
(c) Nothing can move faster than light.
(d) Gravitational waves.

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

Short Answer Questions

1. Which of the following is a correct statement, based on the theory of special relativity?

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

3. What type of a wave is light?

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

5. What is the fundamental force responsible for keeping the nucleus of an atom "glued" together?

(see the answer key)

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