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

2. Who first proposed the existence of extra dimensions?
(a) Maxwell.
(b) Hawking.
(c) Einstein.
(d) Kaluza.

3. The wave-like nature of the electron means that after a collision, _____.
(a) The electron will double in frequency.
(b) The electron has a range of possible locations.
(c) The electron will disperse into a wave of energy.
(d) The electron can never be located again.

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

5. Who posited the existence of M-theory?
(a) Plesser.
(b) Witten.
(c) Greene.
(d) Brandenberger.

Short Answer Questions

1. What is a virtual string pair?

2. What is the importance of the string-coupling constant?

3. How does the shape of the extra "curled up" dimensions affect the vibration of strings?

4. Kaluza-Klein theory units which two fundamental forces?

5. What property of electromagnetic waves did Max Planck solve the thermodynamic problem of the oven by discovering?

(see the answer key)

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