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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. Who came up with a way to draw longitude meridians on the night sky?
(a) John Davis.
(b) Sir Kenelm Digby.
(c) William Whiston.
(d) Samuel Fyler.

2. What was wrong with the watch built within a vacuum?
(a) The pendulum wasn't able to swing freely because of the vacuum.
(b) It was too large to take to sea.
(c) It was too expensive for the common sailor.
(d) It lost accuracy due to temperature.

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

4. What was the powder of sympathy method to determine longitude called?
(a) The healing bird theory.
(b) The magical powder theory.
(c) The barking animal theory.
(d) The wounded dog theory.

5. What was the size of the H1?
(a) One hundred pounds and the size of a small car.
(b) Five pounds and able to fit in a briefcase.
(c) Six ounces and the size of a modern wristwatch.
(d) Seventy pounds and enclosed in a 4x4x4 case.

Short Answer Questions

1. How much did Harrison receive to complete H-4 after the initial tests?

2. At the end of Chapter 6: The Prize, how had Newton changed his thinking about the longitude problem?

3. How many times was Harrison married?

4. What was Huygens best known as?

5. Harrison's clocks were referred to as:

(see the answer key)

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