If a clock on a ship indicates that it is 2:00 P.M.in its home port,while another clock on the ship indicates that it is 12:00 noon at the ship's present location,what is the difference in longitude between the ship's position and its home port?
A)The ship is 2° east of its home port.
B)The ship is 2° west of its home port.
C)The ship is 30° east of its home port.
D)The ship is 30° west of its home port.
E)The ship is 45° west of its home port.

Question

Quizplus · Accepted Answer

The difference in time between the ship's position and its home port is 2 hours. Since the Earth rotates 15° per hour, a 2-hour difference corresponds to 30°. The ship's local time is earlier, indicating it is west of its home port.

If a Clock on a Ship Indicates That It Is