# Earth Volume 4 UREs

100 Questions | Attempts: 42
Share  Settings  • 1.
The equator is
• A.

Not a great circle

• B.

Equal distance from the poles

• C.

A plane parallel to the polar axis

• D.

The only fixed reference point on the earth

• 2.
Any plane that passes through the center of the Earth and divides it into two equal parts forms what on the surface of the earth?
• A.

Equator

• B.

Great circle

• C.

Parallel of latitude

• D.

Meridian of longitude

• 3.
Circles running east to west around the earth are called
• A.

Equatorial parallels

• B.

Parallels of latitude

• C.

Equatorial meridians

• D.

Meridians of longitude

• 4.
Parallels of the latitude are parallel to the
• A.

Equator

• B.

Polar axis

• C.

Greenwich meridian

• D.

International date line

• 5.
Parallels between the equator and the north pole carry values from
• A.

0° to 90°N

• B.

0° to 90°S

• C.

0° to 180°N

• D.

0° to 180°S

• 6.
Parallels between the equator and the south pole carry values from
• A.

0° to 90°N

• B.

0° to 90°S

• C.

0° to 180°N

• D.

0° to 180°S

• 7.
The international date line is
• A.

A circle designated 0° latitude

• B.

Designated as the 180° meridian

• C.

A meridian passing through Greenwich, England

• D.

A circle located an equal distance between the north and south poles

• 8.
Starting from the prime meridian and going east to the international dateline, meridians are assigned values of
• A.

0° to 90° east

• B.

0° to 90° west

• C.

0° to 180° east

• D.

0° to 180° west

• 9.
A correct geographic coordinate is
• A.

45°N

• B.

15°S

• C.

99°N 120°E

• D.

76°S 030°W

• 10.
If your aircraft is flying with a true heading of 320° and your destination point is located at a true bearing of 270°, what is your relative bearing to the destination point?
• A.

50°

• B.

270°

• C.

310°

• D.

320°

• 11.
If you fly along the equator from 0°N10°E to 0°N15°E, how many nautical miles(NM) will you have flown?
• A.

250 NM

• B.

300 NM

• C.

350 NM

• D.

400 NM

• 12.
The wind's effect on an aircraft is
• A.

Slight

• B.

Negligible

• C.

Significant

• D.

Unimportant

• 13.
Wind moving from 225° towards 45° at a speed of 15 knots would be expressed as
• A.

45°/15 knots

• B.

225°/15 knots

• C.

225° to 45°/15 knots

• D.

45° from 225°/15 knots

• 14.
The aircraft's path over the Earth's surface is called
• A.

Track

• B.

True bearing

• C.

• D.

Intended track

• 15.
If the aircraft is flying a true heading of 180° what are the effects of a 180°/20 knot wind on its ground speed and track?
• A.

Increase in ground speed with right drift

• B.

Decrease in ground speed with right drift

• C.

Increase in ground speed with no change in track

• D.

Decrease in ground speed with no change in track

• 16.
What is used to correct true heading and allow the aircraft to achieve the desired true course?
• A.

Drift correction

• B.

Wind disbursement

• C.

Airspeed correction

• D.

Ground speed correction

• 17.
True directions are measured from the
• A.

Equator

• B.

0° meridian

• C.

Magnetic poles

• D.

Geographical poles

• 18.
The lines on navigation charts that connect points of equal magnetic variation are called
• A.

Agonic lines

• B.

Isogonic lines

• C.

Variation lines

• D.

Deviation lines

• 19.
The lines on navigation charts that connect points of zero magnetic variation are called
• A.

Agonic lines

• B.

Isogonic lines

• C.

Variation lines

• D.

Deviation lines

• 20.
• A.

Altitude

• B.

A coordinate system

• C.

A frame of reference

• D.

A frame of displacement

• 21.
Which is not a basic inertial navigation system component
• A.

Platform

• B.

Integrator

• C.

Summing unit

• D.

Accelerometer

• 22.
What inertial navigation system component measures aircraft movement
• A.

Platform

• B.

Integrator

• C.

Computer

• D.

Accelerometer

• 23.
The inertial navigation system's accelerometers must be protected from
• A.

Motion and pressure changes

• B.

Magnetic and motion changes

• C.

Temperature and pressure changes

• D.

Temperature and magnetic changes

• 24.
To measure acceleration in all directions an aircraft's inertial navigation system uses how many accelerometers?
• A.

1

• B.

2

• C.

3

• D.

4

• 25.
The changing of position with respect to some other body is called
• A.

Speed

• B.

Motion

• C.

Velocity

• D.

Reference

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