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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. According to general relativity, all objects that have mass have what effect on space-time?
(a) They stretch space-time for other very distant objects.
(b) They tear space-time when they travel at near-light speeds.
(c) They warp space-time around them.
(d) They fold space-time as they move past one another.

2. What is the fundamental force responsible for keeping the nucleus of an atom "glued" together?
(a) Quantum-tunneling force.
(b) The nuclear-strong force.
(c) Potential electrical force.
(d) Gravitational force.

3. In 1968 it was discovered that protons and neutrons are composed of which type of particle?
(a) Muons.
(b) Baryons.
(c) Neutrinos.
(d) Quarks.

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

5. What is different about a particle of antimatter, compared to its normal counterpart?
(a) Zero mass.
(b) Negative mass.
(c) Opposite electrical charge.
(d) Complementary spin.

Short Answer Questions

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

2. According to Einstein's theory of general relativity, if two objects have a gravitational pull on one another, and one changes its mass or distance from the other, how quickly does the effect of this change travel to the other object?

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

4. Which of the following correctly describes the structure of an atom?

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

(see the answer key)

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