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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 5, The Need for a New Theory, General Relativity vs. Quantum Mechanics.

Multiple Choice Questions

1. Which of the following is a correct statement, based on the theory of special relativity?
(a) Time and space are not experienced exactly the same by all observers
(b) Energy only exists relative to mass.
(c) Movement can only be measured relative to very massive objects, such as stars.
(d) Time is always the same to all observers, but space is not.

2. Edwin Hubble used Einstein's theories to show that the fabric of the universe _____.
(a) Is not static, it must either be shrinking or expanding.
(b) Has a finite boundary.
(c) Is uniform in all places and times.
(d) Is not flat, it is curved, either inwards or outwards.

3. Black holes are dense and massive cosmological bodies. What unique distinction do they have?
(a) They are the only types of stars that can produce uranium and heavier elements.
(b) Neutrinos always flow towards them.
(c) Light cannot escape their gravitational well.
(d) They are the only objects that emit gamma rays.

4. General relativity is incompatible with _____.
(a) Quantum mechanics.
(b) The big bang theory.
(c) The photoelectric effect.
(d) State theory.

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

Short Answer Questions

1. What characteristic of the string determines the properties of the particle it represents?

2. What is the quantum, or messenger particle, of gravity?

3. What type of motion cannot be felt or sensed by the moving observer?

4. Why are the fluctuations that quantum physics predicts not observable in everyday life?

5. What property of electromagnetic waves did Max Planck solve the thermodynamic problem of the oven by discovering?

(see the answer key)

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