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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter Seven, The Super in Superstring.

Multiple Choice Questions

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

2. What is the Planck energy?
(a) The typical energy of a vibrating string.
(b) The energy required to create a string.
(c) The typical energy of a messenger particle.
(d) The energy required to change a string's pattern.

3. Which of the following is correct about the speed at which light moves?
(a) Its speed depends on the observer.
(b) It moves at a constant speed only near a gravitational field.
(c) It moves at a constant speed for all observers.
(d) It moves faster at higher energy levels.

4. Einstein's equation, E=mc^2, states that which of the following are equivalent?
(a) Light and magnetism.
(b) Electricity and magnetism.
(c) Energy and light.
(d) Energy and mass.

5. What type of motion cannot be felt or sensed by the moving observer?
(a) Constant-velocity movement.
(b) Orbital movement around a star.
(c) Accelerating movement.
(d) Slowing or decelerating movement.

Short Answer Questions

1. According to special relativity, which of the following is true about the passage of time for an observer moving near the speed of light?

2. What characteristic of the string determines the properties of the particle it represents?

3. What are the vibrational patterns that a string can exhibit called?

4. What is the fundamental force responsible for keeping the nucleus of an atom "glued" together?

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

(see the answer key)

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