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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 21, To The Sky!, Chapter 22, Tiptoeing Through the Milky Way.

Multiple Choice Questions

1. Where does Sagan think that life will most likely be eventually found?
(a) A moon in the solar system.
(b) Mars.
(c) Earth-like planets around other stars.
(d) Deep space.

2. What punishment did Galileo suffer as a result of his works?
(a) He was imprisoned for life.
(b) He was burned at the stake.
(c) He was beheaded.
(d) He was put under permanent house arrest.

3. Sagan estimates that intelligent life might arise on average in one out of how many stars?
(a) One trillion.
(b) One million.
(c) One billion.
(d) Ten thousand.

4. Titan orbits what planet?
(a) Saturn.
(b) Jupiter.
(c) Neptune.
(d) Uranus.

5. What fuel source might be viable within asteroids?
(a) Bacteria byproducts.
(b) Hexane.
(c) Organic solids.
(d) Methane.

Short Answer Questions

1. What type of waves could be analyzed to demonstrate that there is intelligent life on Earth?

2. What astronomical discovery did Galileo make that significantly damaged the geocentric theory?

3. Sagan suggests that humans could live and thrive around what unusual type of star?

4. Sagan worries about how societies of what type would handle the technology that could stop Earth-bound asteroids?

5. It is believed that some of Saturn's rings may eventually form into what?

(see the answer key)

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