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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 3, Of Warps and Ripples.

Multiple Choice Questions

1. How can black holes be detected?
(a) By looking for dark gaps in clusters of stars.
(b) By their effects on objects around them.
(c) With an ultraviolet-range telescope.
(d) By observing the directions of solar winds.

2. Which of the following is correct about the speed at which light moves?
(a) Its speed depends on the observer.
(b) It moves at a constant speed for all observers.
(c) It moves faster at higher energy levels.
(d) It moves at a constant speed only near a gravitational field.

3. What would an outside observer notice about an object moving near the speed of light?
(a) It would be shorted in the direction of its movement.
(b) It would appear vastly larger than it would at rest.
(c) It would appear to move slower near a gravitational field.
(d) It would not be observable under any circumstances.

4. In 1968 it was discovered that protons and neutrons are composed of which type of particle?
(a) Neutrinos.
(b) Muons.
(c) Quarks.
(d) Baryons.

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

Short Answer Questions

1. Einstein's equation, E=mc^2, states that which of the following are equivalent?

2. In the 1800s, James Clerk Maxwell used a new mathematical framework to unite _____.

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

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

5. According to general relativity, which of the following is said to warp or bend space-time?

(see the answer key)

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