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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter Twelve, Beyond Strings, In Search of M-Theory.

Multiple Choice Questions

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

2. What is the photoelectric effect?
(a) Photons can spontaneously decay into electrons in powerful magnetic fields.
(b) When light shines on metals, the metals emit electrons.
(c) Electrons follow quantum paths made by photons.
(d) Electrons and photons only interact if they have the same frequency.

3. Which of the following is not true according to special relativity?
(a) Time does not pass for objects that are perfectly at rest.
(b) No object can move faster than the speed of light.
(c) Motion and time are relative; they depend on the observer.
(d) All objects move at a constant speed through space-time.

4. In quantum mechanics, what is symmetry breaking?
(a) When an asymmetrical matter and anti-matter pair is created.
(b) When two fused fundamental forces become separated out.
(c) When the symmetry between a electrical and magnetic field is broken at high energy levels.
(d) The primary reason that the theory is incompatible with general relativity.

5. The discovery of the tearing of space-time came from cooperation between experts in physics and _____.
(a) Engineering.
(b) Mathematics.
(c) Cosmology.
(d) Astronomy.

Short Answer Questions

1. According to special relativity, which of the following can move faster than light?

2. Who discovered the theory of general relativity?

3. Which of the following is a correct statement, based on the theory of special relativity?

4. What is the Planck energy?

5. Which of the following is not one of the four fundamental forces of the universe?

(see the answer key)

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