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This test consists of 5 multiple choice questions, 5 short answer questions, and 10 short essay questions.

Multiple Choice Questions

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

2. According to general relativity, which of the following is said to warp or bend space-time?
(a) Gravity and electromagnetic fields.
(b) Constant, relativistic speed motion.
(c) Accelerated motion and orbital motion.
(d) Accelerated motion and gravity.

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

4. What characteristic of the string determines the properties of the particle it represents?
(a) Its length.
(b) Its mass.
(c) Its frequency of vibration.
(d) The number of other strings with which it is threaded.

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

Short Answer Questions

1. General relativity is incompatible with _____.

2. What is the shape of all particles, at the smallest possible level, according to string theory?

3. What is quantum foam?

4. How are the amplitude of a string's vibration and the mass of the particle it represents related?

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

Short Essay Questions

1. Describe the basic principles of string theory.

2. State Newton's law of gravity.

3. Describe the symmetry between the electromagnetism and the weak force that is predicted by quantum electroweak theory.

4. What are the messenger particles of the strong and weak force, and what function do they perform?

5. Suppose that two objects are exerting a gravitational pull on each other, when one suddenly moves a large distance further away from the other object. Describe the impact of this event according to general relativity.

6. Describe a black hole, including some of its physical properties and methods by which it can be detected.

7. How many string theories are there and how did there come to be multiple theories?

8. Describe the "equivalence principle", which relates acceleration and gravitational force.

9. In physics, what is symmetry?

10. What is the relationship between wavelength, frequency, and a wave's minimum energy?

(see the answer keys)

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