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This quiz consists of 5 multiple choice and 5 short answer questions through Part 5, Chapter 20.

Multiple Choice Questions

1. Astronomer Edmond Halley believed that the distance from the Earth to the sun could be deduced from the:
(a) Position of Mars.
(b) Transits of Venus.
(c) Distance to the moon.
(d) Size of solar flares.

2. Scientists are aware of at least how many galaxies in the universe?
(a) 140 billion.
(b) 110 thousand.
(c) 90 trillion.
(d) 20 million.

3. What is an extremophile?
(a) An organism adapted to living in extreme conditions.
(b) A scientist who studies climate extremes.
(c) A researcher who explores extremely isolated regions.
(d) An extremely large living organism.

4. Scientists assumed stromatolites were extinct until they were discovered where in 1961?
(a) Armenia.
(b) Algeria.
(c) Argentina.
(d) Australia.

5. The fact that Pluto has a moon was not discovered until:
(a) 1991.
(b) 1978.
(c) 1936.
(d) 1965.

Short Answer Questions

1. In 1871, Lord Kelvin suggested that life on Earth started because of:

2. About how many stars can be seen from Earth using a two-inch telescope?

3. Invented in the 1930s, chlorofluorocarbons (CFCs) have proven to be damaging to:

4. Which of the following is NOT a quark "flavor?"

5. What is a supernova?

(see the answer key)

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