Maps and Charts Flashcards
Explain Orthomorphism/Conformality
Scale is correct in all directions and bearings are correctly represented
What is the standard parallel with regards to a Lambert Conical projection?
The point where the cone touches the surface of the reduced Earth
What is the constant of the cone/chart convergence factor on a Lambert Conical projection?
The amount of the circle remaining when the cone is unrolled.
How can the constant of the cone be calculated using the parallel of origin on a Lambert Conical projection?
Sin( Parallel of Origin ) = Constant of the Cone
Sin-1( Constant of the Cone ) = Parallel of Origin
On a Lambert Conical projection, the scale is __ at the standard parallels, ___ between them, and ___ outside of them.
correct, contracted, expanded
Great circles on a Lambert Conical are drawn as ___
straight lines, slightly concave to the parallel of origin
Rhumb lines on a Lambert Conical are drawn as ___
Curves concave to the nearer pole
On a Lambert Conical, the scale is correct at the ___, and the convergency is correct at the ___.
Standard Parallels, Parallel of Origin
On a Mercator projection, the scale varies with ___
The secant of latitude. Secant( Angle ) = 1 / Cos( Angle )
On a Mercator projection, great circles are plotted as ___ near the Equator, and as ___ away from the Equator
straight lines, curves concave to the Equator
On a Polar Stereographic projection, the parallel of origin is at the ___
Pole
On a Polar Stereographic projection, the scale ___ away from the pole
expands
On a Polar Stereographic projection, scale and convergency are correct at the __
pole
On a Polar Stereographic projection, great circles are slightly concave to the ___
pole
On a Polar Stereographic projection, convergency equals ___
change of longitude
