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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter Thirteen, Black Holes, A String/M Theory Perspective.

Multiple Choice Questions

1. What discovery about string theory triggered the "superstring revolution"?
(a) Its approximate equations were solved for the first time.
(b) Einstein announced that it exactly matched his formulas for general relativity.
(c) It was experimentally confirmed at Fermilab in the US.
(d) It was found to encompass the four fundamental forces of matter.

2. The discovery of the tearing of space-time came from cooperation between experts in physics and _____.
(a) Mathematics.
(b) Astronomy.
(c) Cosmology.
(d) Engineering.

3. There are many possible Calabi-Yau spaces, but only shapes with which of the following characteristics are considered real possibilities?
(a) Those that have no time-dimensions.
(b) Those that solve the perturbation theory.
(c) Those that meet the vibration requirements and have an appropriate number of dimensions.
(d) Those that unify the four forces and have no extended dimensions.

4. By what factor is the minimum mass of a wrapped string in determined?
(a) The string's winding number.
(b) The vacuum energy of the dimension it is wrapped around.
(c) The string's Planck tension.
(d) The size of the circular dimension it is wrapped around.

5. 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 no energy.
(c) The oven can only store energy if it has no mass.
(d) The oven contains infinite energy.

Short Answer Questions

1. Which of the following is NOT a property that is used to define both black holes and elementary particles?

2. What property does an external black hole have?

3. How many total dimensions are required by string theory?

4. According to Einstein's theory of general relativity, 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?

5. Who discovered the theory of general relativity?

(see the answer key)

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