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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. Kaluza's theory suggested that electromagnetism was carried by ripples in _____.
(a) The "curled up" dimensions.
(b) The three normal space dimensions.
(c) The time-dimension only.
(d) All dimensions of both space and time.

2. Why are the extra dimensions needed in string theory?
(a) To remove time from its equations.
(b) To account for the infinite-energy problem.
(c) To prevent the negative and infinite answers to its physical equations.
(d) To provide more space for strings.

3. Which of the following is NOT a property that is used to define both black holes and elementary particles?
(a) Mass.
(b) Force charge.
(c) Spin.
(d) Half-life.

4. What shape allows for the vibrational patterns that we observe in our universe?
(a) The six-dimensional torus.
(b) The Calabi-Yau space.
(c) The Einstein matrix.
(d) The Kaluza-Klein shape.

5. What is supergravity?
(a) The gravitational conditions inside a black hole.
(b) The gravitational force felt at the Planck scale.
(c) A combination of general relativity and supersymmetry.
(d) The relativistic effect of two particles occupying the same location.

Short Answer Questions

1. 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?

2. Which of the following is not one of the four fundamental forces of the universe?

3. How many dimensions did the tiny objects involved in the original statement of string theory have?

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

5. Which of the following is true regarding the mass and spin of a pair of superpartners?

(see the answer key)

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