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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. After Bradley died, who filled the open slot on the Board of Longitude.
(a) Harrison.
(b) Maskelyne.
(c) Bliss.
(d) It remains vacant.

2. Which clock can function today, but is not run in order to preserve its parts?
(a) H-1.
(b) H-4.
(c) H-3.
(d) H-2.

3. In order for Ditton's and Whiston's plan to determine longitude to work, what would have to be done?
(a) Accurate clocks would need to be on all ships.
(b) A fleet of ships would need to be anchored at 600-mile intervals in the ocean.
(c) New discoveries in compasses would need to be made.
(d) Ship captains would need to go to "Longitude School."

4. Before using clocks to navigate longitude, sailors used the __________.
(a) Sky: sun, moon, stars and constellations.
(b) Maps.
(c) Currents.
(d) Compass.

5. Due to the astronomers' ______________, Harrison would face much resistance after he finished his greatest work.
(a) Classism.
(b) Elitism.
(c) Egos.
(d) Racism.

Short Answer Questions

1. What did Edmund Halley successfully predict?

2. In AD 150, who plotted lines of longitude and latitude?

3. Why was it remarkable for Harrison to build his first pendulum clock?

4. How many men of the original 500 perished on Centurion's voyage to the South Pacific?

5. When measuring longitude, each hour of time difference between the ship and starting point marks a progress of how many degrees of longitude?

(see the answer key)

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