Which instrument expresses direction in degrees on a map or chart?

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Study for the Pilot's Handbook of Aeronautical Knowledge Exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

Which instrument expresses direction in degrees on a map or chart?

Explanation:
Direction in degrees on maps or charts is expressed by a compass rose, a circular diagram with degree marks around a north reference. It shows how headings are measured from north (0/360 degrees) and how they progress clockwise, which lets pilots plot precise courses in degrees. Some charts may distinguish true north from magnetic north, but the essential idea is that the compass rose provides the angular directions in degrees on the chart. The other items described are not instruments for showing directional angles on charts: a cold front is a weather boundary, clear ice is a weather/operational hazard, and a complex aircraft is a type of airplane.

Direction in degrees on maps or charts is expressed by a compass rose, a circular diagram with degree marks around a north reference. It shows how headings are measured from north (0/360 degrees) and how they progress clockwise, which lets pilots plot precise courses in degrees. Some charts may distinguish true north from magnetic north, but the essential idea is that the compass rose provides the angular directions in degrees on the chart. The other items described are not instruments for showing directional angles on charts: a cold front is a weather boundary, clear ice is a weather/operational hazard, and a complex aircraft is a type of airplane.

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