Mapping the Earth Flashcards

1
Q

Solving the problem of mapping the earth on a flat piece of paper is referred to as what

A

CARTOGRAPHY

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Solutions to dealing with cartography are known as what

A

PROJECTIONS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

A projection solution compromises on certain key navigational requirements. This results in what

A

INACCURACIES

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

2 key properties that maps should possess

A
  1. CONFORMITY
  2. EQUIVALENCE

Conformity also known as orthomorphism

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is a standard parallel

A

Cone penetrating 2 parallel latitudes

Lambert Conformal Conic Projection
Cone over the earth penetrates the earths surface at 2 parallel lattitudes.
Where this occurs is known as the standard parallels
LINK HERE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

A method of projecting the earth onto a map using a cone is known as what

A

LAMBERT CONFORMAL CONIC PROJECTION

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

A mehtod of projecting the earth onto a map using a vertical tube of paper

A

DIRECT MERCATOR PROJECTION

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

A method of projecting the earth onto a map using a horizontal tube of paper

A

TRANSVERSE MERCATOR PROJECTION

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Direct Mercator Projection conformity

Parallels of latitude cross all meridians of longitude at what angle

A

RIGHT ANGLES
(90॰)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Lambert Conformal Conic Chart

Parallels of latitude cross all meridians of longitude at what angle

A

RIGHT ANGLES
(90॰)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Lambert Conformal Conic Chart

A striaght line on a map represents a Rhumb line
TRUE or FALSE

A

FALSE

A straight line on a lambert Conformal Conic Chart represents a GREAT CIRCLE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Direct Mercator Projection conformity

A straight line on a map will be known as what

A

RHUMB LINE

Will not be the shortest parth between two points

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Transverse Mercator Projection conformity

A straight line on a map will be known as what

A

RHUMB LINE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

On general aviation charts, the map is overlaid with a Lat/Long grid typically spaced at (i)____ minute angles in (ii) LAT or LONG or BOTH

A

30 MIN
BOTH

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Lamberts Conformal Conic

Meridians of longitude at the top of the map are parallel
TRUE or FALSE

A

FALSE

They are not parallel and converge

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Lamberts Conformal Conic

Where should you measure a bearing of a track from and why

A
  1. Center Point of Track
  2. Bearings change as meridians are not parallel

Since the lines of meridian are not parallel, this means that a bearing at points of intercept of the meridian line will be differing angles, so the bearing will change.
LINK HERE

17
Q

Every map used for navigation must show what variation for the area it covers

A

MAGNETIC VARIATION

18
Q

1nm = ____ ft

A

6080 ft

19
Q

1nm = ____ sm

A

1.15 sm

20
Q

1m = ____ ft

A

3.28 ft

21
Q

1ft = ____ in

A

12 in

22
Q

1m = ____ in

A

39 in

23
Q

1nm = ____ km

A

1.852 km
(1852 m)