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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter Ten, Quantum Geometry.

Multiple Choice Questions

1. Which of the following is true of a particle's spin?
(a) It increases with each interaction with a particle of greater spin.
(b) It depends on the strength of the local magnetic field.
(c) It is constant for that particle.
(d) It changes depending on the particle's energy.

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

3. Which of the following is NOT an actual version of string theory?
(a) Type I theory.
(b) Type IIA theory.
(c) Fermionic type IV theory.
(d) Heterotic type O(32) theory.

4. What is the result when a particle of matter and a particle of antimatter are brought into contact?
(a) A strange quark is formed.
(b) A black hole is formed.
(c) Energy is released and both particles are destroyed.
(d) A theoretically unlimited amount of energy is released.

5. How does the shape of the extra "curled up" dimensions affect the vibration of strings?
(a) Only the wavelength of the vibration is affected.
(b) Only the total energy of the vibration is affected.
(c) The shape determines what types of vibrations are possible.
(d) The shape does not affect the vibrational patterns.

Short Answer Questions

1. Edwin Hubble used Einstein's theories to show that the fabric of the universe _____.

2. Which of the following accurately describes the phenomenon of "quantum tunneling"?

3. Why are the extra dimensions needed in string theory?

4. What is the traditional method of testing theories in physics?

5. What is the quantum, or messenger particle, of gravity?

(see the answer key)

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