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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 12: A Tale of Two Portraits.

Multiple Choice Questions

1. When Harrison was asked to hand his plans over to the British government, what was his reaction?
(a) He was furious, but complied.
(b) He was excited to share his plans with more people.
(c) He was jovial and handed them over.
(d) He was devastated and burned them.

2. What does the coiled balance spring do in clocks?
(a) Prevents waves from destabilizing the clock.
(b) Prevents the pendulum from losing time.
(c) Allows the navigator to know the time in the home port.
(d) Allows the clock to keep a constant temperature.

3. What did Huygen's published argument state?
(a) A map with correct currents was necessary to navigate at sea.
(b) Jupiters moons were really rings.
(c) Longitude could be determined by the moon.
(d) A clock could establish longitude at sea.

4. What did Harrison need to do to prove the H-4 worked?
(a) Draw the plans before the Board of Longitude.
(b) Take it apart and put it back together.
(c) Label an astronomical map.
(d) Make two copies to prove that it could be duplicated.

5. What was the main point of Harrison's first presentation before the Board of Longitude?
(a) He demonstrated how H-1 worked.
(b) He articulated the promise of an astronomical solution.
(c) He presented how H-1 would solve the longitude problem.
(d) He complained about H-1's errors.

Short Answer Questions

1. Huygen's clocks went on a number of voyages. On the third voyage to the Cape Verde Islands, what did his clock do?

2. What did George Graham give Harrison?

3. After successfully testing the H-4, how much of the Longitude Prize did Harrison receive?

4. How many more times accurate was the H-4 than the Longitude Act required?

5. Which clock did Harrison become dissatisfied with and never made to sea?

(see the answer key)

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