Navigation and Radio Overview

What is the angle between the true meridian and the magnetic meridian?

• compass shift

• deviation

• gravity effect

• variation

What are the lines connecting areas of the same variation on a map or chart called?

• isogonals

• variobar

• isovariable

• agonic line

Which liquids are compasses typically filled with?

• water/alcohol

• kerosene/alcohol

• oil/kerosene

• avgas/water

Deviation or the deflection of a compass from magnetic to compass north is caused by what?

• the rotation of the earth

• uneven heating of the earth's surface

• constant radio static

• magnetic fields associated with the metal in the airplane's frame

Deviation: 8° W

Magnetic Heading: 40°

True Heading: 33°

Variation?

Compass Heading?

Answer explanation

Variation: 7° W

Compass heading: 48°

On east and west headings, acceleration causes the compass to do what?

• spin clockwise

• register a turn towards the south

• register a turn towards the north

• lag/lead

How many feet are in a nautical mile and statute mile?

• 6,080/5,280

• 1,000/1,500

• 5,280/6,080

• 1,000 in both

What are the four basic elements in map construction?

Answer explanation

1. Areas

2. Shapes

3. Bearings

4. Distances

1 minute of latitude is always equal to (a)   NM.

A straight line drawn on which chart type represents an arc of a great circle?

• Mercator Conic Projection

• Tranverse Mercator Projection

• Mercator Projection

• Lambert Conformal Conic Projection