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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter Twelve, Beyond Strings, In Search of M-Theory.

Multiple Choice Questions

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

2. In M-theory, what role does duality play?
(a) It allows space-tearing flop transitions to extend into extra dimensions.
(b) It helps to incorporate general relativity.
(c) It links electromagnetism and gravity.
(d) It shows that the five theories are connected.

3. How many total dimensions are required by string theory?
(a) Eight.
(b) Ten.
(c) Five.
(d) Seven.

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

5. What rule did Max Planck discover the electromagnetic waves bounded in a container, such as an oven, must follow?
(a) The energies of all waves inside the over must cancel out to zero.
(b) They must have a whole number of peaks and troughs that fit perfectly inside the container.
(c) The frequencies of the waves must all be the same.
(d) There must be an even number of peaks and troughs.

Short Answer Questions

1. In M-theory, what is a two-dimensional oscillating object is called?

2. What shape allows for the vibrational patterns that we observe in our universe?

3. What metric best approximates the scales at which extra dimensions would have a major impact?

4. How many dimensions are necessitated by M-theory?

5. What characteristic did Werner Heisenberg discovered that some features of the universe at very small scales, and some properties of particle?

(see the answer key)

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