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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter Seven, The Super in Superstring.

Multiple Choice Questions

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

2. In Einstein's famous equation, E=mc^2, what does "c" represent?
(a) The frequency of light.
(b) The speed of the object.
(c) The speed of light.
(d) The object's density.

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

4. What is the Planck mass?
(a) The typical mass of a vibrating string.
(b) The average mass gained by a string when it changes to a higher-frequency pattern.
(c) The typical mass created by quantum foam over one nano-second.
(d) The typical energy of a quark.

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

Short Answer Questions

1. According to string theory, why do different particles have different properties?

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

3. Which of the following is NOT an actual version of string theory?

4. In quantum mechanics, what is symmetry breaking?

5. How are the wavelength of a string's vibration and the mass of the particle it represents related?

(see the answer key)

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