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

Multiple Choice Questions

1. Which of the follow is true of objects with which string theory is concerned?
(a) The objects are purely imaginary.
(b) It concerns one-dimensional strings and nothing else.
(c) They are all really Calabi-Yau shapes.
(d) They include strings and other objects as well.

2. What is the Planck tension?
(a) The typical tension in a string.
(b) The pull between strings at the Planck length.
(c) The attraction felt by a string through the strong force.
(d) The vacuum-energy of a matter and anti-matter string pair.

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

4. What is the photoelectric effect?
(a) Electrons and photons only interact if they have the same frequency.
(b) Photons can spontaneously decay into electrons in powerful magnetic fields.
(c) When light shines on metals, the metals emit electrons.
(d) Electrons follow quantum paths made by photons.

5. 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?
(a) At exactly the speed of light.
(b) Near the speed of light, faster for lighter objects.
(c) Near the speed of light, faster for more massive objects.
(d) Instantaneously.

6. What is the fundamental force responsible for keeping the nucleus of an atom "glued" together?
(a) The nuclear-strong force.
(b) Gravitational force.
(c) Quantum-tunneling force.
(d) Potential electrical force.

7. The advent of fermionic vibrational patterns resulted in the creation of _____.
(a) Fermionic resonance theory.
(b) Supersymmetric quantum field theory.
(c) Quantum electroweak theory.
(d) Symmetric antistring theory.

8. Why are the fluctuations that quantum physics predicts not observable in everyday life?
(a) Most fluctuations are canceled out by electromagnetic waves, like light.
(b) On large scales, the effects cancel each other out.
(c) The human brain filters them out.
(d) The fluctuations only occur in deep space.

9. Which of the following is not one of the four fundamental forces of the universe?
(a) The nuclear-weak force.
(b) The photoelectric force.
(c) The electromagnetic force.
(d) Gravity.

10. What is the Planck mass?
(a) The typical mass of a vibrating string.
(b) The typical mass created by quantum foam over one nano-second.
(c) The typical energy of a quark.
(d) The average mass gained by a string when it changes to a higher-frequency pattern.

11. Which of the following is closest to the Planck length?
(a) A millionth of a billionth of a billionth of a billionth of a centimeter.
(b) A millionth of a centimeter.
(c) A billionth of a billionth of a centimeter.
(d) A thousandth of a centimeter.

12. What property did the double-slit experiment demonstrate that light has?
(a) It can be bent by gravity fields.
(b) It has a finite energy level at all frequencies.
(c) It has an infinite number of possible frequencies.
(d) It behaves as a wave.

13. What would an outside observer notice about an object moving near the speed of light?
(a) It would not be observable under any circumstances.
(b) It would appear vastly larger than it would at rest.
(c) It would be shorted in the direction of its movement.
(d) It would appear to move slower near a gravitational field.

14. What is the fundamental particle, the smallest possible bundle of energy, for the electromagnetic force?
(a) The gluon.
(b) The photon.
(c) The neutrino.
(d) The electron.

15. Which of the following qualities must a physical law have in order to be considered symmetric?
(a) It works regardless of the spin of the particles involved.
(b) It is valid for both matter and anti-matter.
(c) It does not depend on where or when it is applied.
(d) It is valid for both matter and energy.

Short Answer Questions

1. In the 1800s, James Clerk Maxwell used a new mathematical framework to unite _____.

2. Which of the following is correct about the speed at which light moves?

3. Einstein's equation, E=mc^2, states that which of the following are equivalent?

4. The smallest possible unit of energy is referred to as _____.

5. Who discovered the theory of general relativity?

(see the answer keys)

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