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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 5: Powder of Sympathy.

Multiple Choice Questions

1. What unusual occurrence helped in early navigation at sea?
(a) Asteroids.
(b) Solar and lunar eclipses.
(c) Storms.
(d) Comets.

2. Who explained the moons of Jupiter with the velocity of light?
(a) Ole Roemer.
(b) Tycho Brahe.
(c) Cassini.
(d) Galileo.

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

4. When was the magnetic compass invented?
(a) 10th century.
(b) 17th century.
(c) 15th century.
(d) 12th century.

5. What was Harrison's most prized accomplishment?
(a) Inventing a clock that would keep accurate time at sea.
(b) Inventing a clock with hands.
(c) Inventing military time.
(d) Discovering the lunar method of calculating longitude.

Short Answer Questions

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

2. What was the name of the Portugese ship described in Chapter 2: The Sea Before Time that ran into a Spanish fleet?

3. What was Giovanni Domenico Cassini famous for?

4. Who won the Hooke/Huygens conflict?

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

(see the answer key)

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