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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 9: Hands on Heaven's Clock.

Multiple Choice Questions

1. What does the term "dead reckoning" refer to?
(a) A primitive way to navigate at sea using estimates from a fixed point.
(b) An advanced way to determine longitude using clocks.
(c) An early way to navigate at sea using the position of stars and the moon.
(d) A way to verify the number of sailors lost at sea.

2. How many men of the original 500 perished on Centurion's voyage to the South Pacific?
(a) 500.
(b) Half.
(c) All but two.
(d) One quarter.

3. What was one of Harrison's innovations?
(a) A vacuum that held out temperature changes.
(b) Gears that could last for extended periods at sea.
(c) A brass and steel pendulum that aided in keeping time despite temperature changes.
(d) A new clock face that revolutionized the way we tell time.

4. Huygen's clocks went on a number of voyages. On the third voyage to the Cape Verde Islands, what did his clock do?
(a) Kept good track of the ship's longitude.
(b) Made the ship arrive three weeks ahead of schedule.
(c) Stopped working midway through the voyage because of the temperature change.
(d) Sent the ship 50 miles off course.

5. Complete this analogy from Chapter 4:Time in a Bottle: Time is to clock as mind is to ____________.
(a) Brain.
(b) Heaven.
(c) Stars.
(d) Head.

Short Answer Questions

1. Who won the Hooke/Huygens conflict?

2. After the Association ran aground and the captain's body was found, what of value was found on him?

3. What does the coiled balance spring do in clocks?

4. How did astronomers feel about Harrison's clock idea for solving the problem of longitude?

5. What did Hadley and Godfrey invent?

(see the answer key)

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