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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. Who demonstrated that an atom is made up of electrons orbiting a nucleus made up of protons?
(a) Albert Einstein.
(b) Murray Gell-Mann.
(c) Ernest Rutherford.
(d) James Chadwick.

2. How does Hawking define scientific theory?
(a) A model of the universe made up of molecules.
(b) A model of the universe with a set of rules.
(c) A model of the universe that predicts some events, but isn't accurate.
(d) A model of the universe that meets common sense expectations.

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

4. Galileo found the moons of what planet using his telescope?
(a) Jupiter.
(b) Neptune.
(c) Mars.
(d) Saturn.

5. Edwin Hubble's observation that the universe is expanding supports what theory?
(a) The Big Bang theory.
(b) The Dark Bang theory.
(c) The Dark Matter theory.
(d) The Universe Expansion theory.

Short Answer Questions

1. Hawking co-authored a paper in what year that explains the big bang theory?

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

3. What is the unit of measurement for particle energy?

4. Who said, "God does not play dice."

5. What shape did Aristotle think the Earth was?

(see the answer key)

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