Variation
Best
What substance affects a compass in any proximity to it?
Metals
Always points to magnetic north.
Magnetic Needle
Molten iron creates these.
Lines of force.
The two names for the angle between true north and magnetic north.
Variation and Magnetic Declination
Join places of zero magnetic variation.
Agonic Lines
Angle between magnetic north and compass north.
Deviation
It is a clear liquid to allow you to read the compass.
Magnetic lines of force between the north and south pole.
A variation of 8 degrees west and a true heading of 120 produces a magnetic heading of ____
128 degrees.
Join places of equal magnetic variation
Isogonic Lines
Compass North is ______
Direction that the magnetic needle points when affected by a running engine and electrical equipment on an aircraft
Reduces the weight of the magnets and the compass card.
Liquid
What is your heading if you fly southeast?
135 degrees.
A variation of 3 degrees west and a magnetic heading of 357 produces a magnetic heading of ____
354 degrees
How does Variation affect navigation?
Geographical coordinates are based on true north but a compass points to magnetic north.
Centripetal and centrifugal forces combine with inertial influence of compass liquid to affect the movement of the compass needle
What is northerly turning error?
Contains the numbers, moves with the compass bowl, and is attached to the pivot.
Compass Card
WHat cardinal point does a bearing of 90 degrees represent?
North
A variation of 12 degrees east and a true heading of 136 produces a magnetic heading of ____
124 degrees
True or False: True and magnetic north are in the same location.
False
What causes a compass to register a turn towards north?
Acceleration.
Allows the compass card to rotate freely.
North - 0
South - 180
West - 270
East - 90
What instrument do I play? (no band members can answer this)
Clarinet.