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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 3, Of Warps and Ripples.

Multiple Choice Questions

1. General relativity is incompatible with _____.
(a) The photoelectric effect.
(b) State theory.
(c) The big bang theory.
(d) Quantum mechanics.

2. According to Newton's law of gravity, the strength of the pull between two objects depends on what factors?
(a) Their densities and the strength of the gravitational field they occupy.
(b) Their masses and the distance between them.
(c) Their masses and potential energies.
(d) The distance between them and their average atomic numbers.

3. Which of the following correctly describes the structure of an atom?
(a) A cloud of electrons orbiting a dense nucleus.
(b) A cloud of neutrons orbiting a nucleus of other particles.
(c) A single nucleus composed of both electrons and protons.
(d) A cloud of protons, each with an electron orbiting it.

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

5. What is the shape of all particles, at the smallest possible level, according to string theory?
(a) A one-dimension loop.
(b) A tangled ball of thin filament.
(c) An infinitely long string.
(d) A thread of thin strings.

Short Answer Questions

1. What is the fundamental particle, the smallest possible bundle of energy, for the electromagnetic force?

2. What is different about a particle of antimatter, compared to its normal counterpart?

3. How can black holes be detected?

4. What are the components of an atomic nucleus?

5. According to general relativity, which of the following is said to warp or bend space-time?

(see the answer key)

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