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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 6, Nothing but Music, The Essentials of Superstring Theory.

Multiple Choice Questions

1. 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.

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

3. According to string theory, why do different particles have different properties?
(a) Their strings are different lengths.
(b) Their strings are vibrating in different patterns.
(c) Their strings do not have the same number of dimensions.
(d) They have different types of strings.

4. How are the amplitude of a string's vibration and the mass of the particle it represents related?
(a) If there is a non-zero amplitude, the particle is massless.
(b) The higher the amplitude, the more massive the particle.
(c) The higher the amplitude, the less massive the particle.
(d) Amplitude and mass are not related.

5. According to general relativity, the change that an object causes in the fabric of space-time depends directly on _____.
(a) Its direction compared to the observer.
(b) Its mass.
(c) Its proximity to another massive body.
(d) Its density.

Short Answer Questions

1. What rule did Max Planck discover the electromagnetic waves bounded in a container, such as an oven, must follow?

2. In Einstein's famous equation, E=mc^2, what does "c" represent?

3. When the distance between two objects is doubled, what happens to the strength of the gravitational pull between them?

4. Which of the following did Einstein considered time?

5. Which of the following is not true according to special relativity?

(see the answer key)

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