Mapping the Earth Flashcards
Solving the problem of mapping the earth on a flat piece of paper is referred to as what
CARTOGRAPHY
Solutions to dealing with cartography are known as what
PROJECTIONS
A projection solution compromises on certain key navigational requirements. This results in what
INACCURACIES
2 key properties that maps should possess
- CONFORMITY
- EQUIVALENCE
Conformity also known as orthomorphism
What is a standard parallel
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
A method of projecting the earth onto a map using a cone is known as what
LAMBERT CONFORMAL CONIC PROJECTION
A mehtod of projecting the earth onto a map using a vertical tube of paper
DIRECT MERCATOR PROJECTION
A method of projecting the earth onto a map using a horizontal tube of paper
TRANSVERSE MERCATOR PROJECTION
Direct Mercator Projection conformity
Parallels of latitude cross all meridians of longitude at what angle
RIGHT ANGLES
(90॰)
Lambert Conformal Conic Chart
Parallels of latitude cross all meridians of longitude at what angle
RIGHT ANGLES
(90॰)
Lambert Conformal Conic Chart
A striaght line on a map represents a Rhumb line
TRUE or FALSE
FALSE
A straight line on a lambert Conformal Conic Chart represents a GREAT CIRCLE
Direct Mercator Projection conformity
A straight line on a map will be known as what
RHUMB LINE
Will not be the shortest parth between two points
Transverse Mercator Projection conformity
A straight line on a map will be known as what
RHUMB LINE
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
30 MIN
BOTH
Lamberts Conformal Conic
Meridians of longitude at the top of the map are parallel
TRUE or FALSE
FALSE
They are not parallel and converge
Lamberts Conformal Conic
Where should you measure a bearing of a track from and why
- Center Point of Track
- 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
Every map used for navigation must show what variation for the area it covers
MAGNETIC VARIATION
1nm = ____ ft
6080 ft
1nm = ____ sm
1.15 sm
1m = ____ ft
3.28 ft
1ft = ____ in
12 in
1m = ____ in
39 in
1nm = ____ km
1.852 km
(1852 m)
