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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 7, Brane New World.

Multiple Choice Questions

1. What is the Planck length?
(a) The smallest length in physics.
(b) The biggest length in physics.
(c) The smallest weight in physics.
(d) The biggest weight in physics.

2. What does Hawking predict humankind will discover?
(a) New time sequences.
(b) New waves.
(c) New genomes.
(d) New levels of particles.

3. How many dimensions may the universe be composed of?
(a) Two.
(b) Three.
(c) One.
(d) More than four.

4. What did Einstein suggest concerning the speed of light?
(a) Light is dependent on motion.
(b) Light is independent of motion.
(c) Light is dependent on time.
(d) Light is independent of time.

5. What does Hawking claim might permeate all of space-time at higher dimensions?
(a) Gravity.
(b) Force.
(c) Mass.
(d) Acceleration.

Short Answer Questions

1. What kind of fluctuations do we have to consider to answer whether or not time travel is possible?

2. What does Hawking believe the possibility of intelligent beings depends on?

3. When was Einstein born?

4. What are cosmic strings?

5. How did physicists respond to Hawking and Penrose's work?

(see the answer key)

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