NR 319

map scale =
Map distance
________________
Ground Distance
resolution
how accurately the location and shop of map features can be depicted for a given map scale
larger scale =
more detail
smaller scale =
less detail
When downloading data from the web what scale was the data created at?
the input scale
cartography
the science that deals with the construction, use and principles behind maps
what is a map?
a model of the earths surface
meridian
intersection of Earth and a plane that passes through the poles
parallel
intersection of earth and a plane that is perpendicular to the rotation axis
latitude
runs from equator to poles
longitude
runs from poles around equator
ellipsoid definition
an ellipse rotated in three demensions about its shorter axis (pole to pole)
projections
representation of a sphere or ellipsoid on a planar surface