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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 5 Elementary Particles and the Forces of Nature.

Multiple Choice Questions

1. The theory of quantum mechanics best describes what world?
(a) The small world of atoms.
(b) The small world of particles.
(c) The small world of molecules.
(d) The small world of sub-atomic particles.

2. In order to explain how black holes become a big bang, Hawking needs to include what?
(a) The theory of relativity.
(b) Particle physics.
(c) The theory of everything.
(d) Quantum mechanics.

3. Who discovered the theory of gravity?
(a) Galileo.
(b) Hubble.
(c) Einstein.
(d) Newton.

4. What does a particle with 0 spin look like?
(a) Different after It makes two full rotations.
(b) Different from different directions.
(c) Different only if spun half way around.
(d) Identical in all directions.

5. Scientists start their understanding of the universe with what?
(a) A theory.
(b) Observations.
(c) Mathematics.
(d) Observations and mathematics.

Short Answer Questions

1. The universe is largely made up of what?

2. What question is among the unanswerable questions children ask, according to the Introduction?

3. Who developed the uncertainty principle?

4. Unlike children, scientists and philosophers, most adults use what to explain away the fundamental questions of the universe?

5. Why do the theories of quantum mechanics and general relativity need to be unified?

(see the answer key)

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