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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter Nine: The Smoking Gun, Experimental Signatures.

Multiple Choice Questions

1. How many family groups are the elementary particles divided into?
(a) Four.
(b) Five.
(c) Three.
(d) Two.

2. Which of the following is correct about the speed at which light moves?
(a) It moves at a constant speed for all observers.
(b) Its speed depends on the observer.
(c) It moves faster at higher energy levels.
(d) It moves at a constant speed only near a gravitational field.

3. What type of motion cannot be felt or sensed by the moving observer?
(a) Orbital movement around a star.
(b) Constant-velocity movement.
(c) Slowing or decelerating movement.
(d) Accelerating movement.

4. The wave-like nature of the electron means that after a collision, _____.
(a) The electron has a range of possible locations.
(b) The electron will disperse into a wave of energy.
(c) The electron will double in frequency.
(d) The electron can never be located again.

5. Which of the following is closest to the Planck length?
(a) A billionth of a billionth of a centimeter.
(b) A millionth of a billionth of a billionth of a billionth of a centimeter.
(c) A thousandth of a centimeter.
(d) A millionth of a centimeter.

Short Answer Questions

1. Einstein's equation, E=mc^2, states that which of the following are equivalent?

2. String theory claims that super particles _____.

3. What is the quantum, or messenger particle, of the strong force?

4. What discovery was made that incorporated gravitational force into quantum mechanics via string theory?

5. Richard Feynman's "sum over paths" theory states that in the double-slit experiment, an electron behaves in what way?

(see the answer key)

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