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This test consists of 15 multiple choice questions and 5 short answer questions.

Multiple Choice Questions

1. What is the traditional method of testing theories in physics?
(a) Experimentation.
(b) Mathematical proof.
(c) Debate.
(d) Consensus.

2. The extra dimension or dimensions in M-theory are needed in order to incorporate _____.
(a) Electroweak duality.
(b) Electromagnetism.
(c) Unwound Calabi-Yau spaces.
(d) Supergravity.

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

4. Which of the following best describes the fate of Kaluza-Klein theory?
(a) It was updated through the 1970s, and eventually incorporated into string theory.
(b) It became widespread for a short time, but receives almost no attention now.
(c) It was quickly discarded as meaningless, but rediscovered by string theory.
(d) It became the mathematical basis of general relativity.

5. Which of the following is true regarding the force of gravity in string theory?
(a) Gravity in string theory is stronger than what we actually observe.
(b) Gravity is not addressed in string theory.
(c) String theory predicts gravity.
(d) Gravity in string theory acts over much longer distances.

6. What does the string coupling constant govern?
(a) The number of strings that can be joined at once.
(b) The relative length of threading between strings.
(c) The strength of links between strings.
(d) The likelihood of strings joining or separating.

7. Which of the following is one of the difficulties in observing super particles?
(a) They are incredibly rare, and pass through most matter.
(b) They are massless.
(c) They are too massive to be observed in a particle accelerator.
(d) They do not interact with either matter or light.

8. What property of both black holes and elementary particles is still unknown?
(a) Their internal structures.
(b) Their relationships to strings.
(c) Their spin.
(d) Their supersymmetric partners.

9. Kaluza-Klein theory units which two fundamental forces?
(a) Electromagnetism and the weak force.
(b) Gravity and electromagnetism.
(c) The strong force and the weak force.
(d) Gravity and the strong force.

10. What is the importance of the string-coupling constant?
(a) If discovered, it could validate string theory as a whole.
(b) It is crucial in estimating the amount of dark energy in the universe.
(c) It determines the energy released during a string's collapse.
(d) It could invalidate the perturbation method.

11. Which of the following is true regarding the tearing of space-time according to general relativity?
(a) A tear would destroy the universe.
(b) It is not known if space-time can tear.
(c) It cannot tear.
(d) It can tear under special circumstances.

12. Which one of the following do physicists believe occurs at the central point of a black hole?
(a) A "white hole" is formed.
(b) Space-time becomes inverted.
(c) An infinite-time flop-transition occurs.
(d) Space-time is torn.

13. What is strong-weak duality?
(a) The coupling of strong and weak forces in M-theory.
(b) A relationship between the strong and weak coupling constants in two different string theories.
(c) The relationship between bosonic-strong string theories and bosonic-weak theories.
(d) The union of the strong and weak forces at high energies.

14. According to modern physics, which of the following may cease to exist at the center of a black hole?
(a) Time.
(b) Strings.
(c) Energy.
(d) Space.

15. What prevents the potentially dangerous effects of an exposed tear in space-time?
(a) Tears are shielded by strings.
(b) Tears only widen to about the Planck length.
(c) Tears occur in curled-up dimensions.
(d) Tears are quickly mended by the force of gravity.

Short Answer Questions

1. Which of the following is true regarding experimental evidence for super particles?

2. How are black holes are widely believed to have originated?

3. Which of the following most accurately describes the state of the universe?

4. At what scale of length is quantum geometry necessitated?

5. The method of tearing space-time discovered by Greene and others is called _____.

(see the answer keys)

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