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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter Fifteen, Prospects.

Multiple Choice Questions

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

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

3. According to string theory, which of the following cannot occur during the collapse of the universe?
(a) It cannot collapse into one of the extra dimensions.
(b) It cannot exert gravitational pull greater than the Planck tension.
(c) It cannot be reduced to a size smaller than the Planck length.
(d) It cannot lose energy.

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

5. The horizon problem is the contradiction that which of the following properties of the universe shouldn't be uniform, but is?
(a) The cosmological constant.
(b) The cosmic background radiation.
(c) The gravitational constant.
(d) The electroweak field depth.

Short Answer Questions

1. In ratios of what number do winding energies come?

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

3. As a string becomes wrapped, which of its properties increases?

4. What is a string's winding number?

5. Black holes are dense and massive cosmological bodies. What unique distinction do they have?

(see the answer key)

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