Maps and Map Projections |
These notes are a supplement and are in no way a substitute for what happens in class. In class there are activities and exercises that involve application of the material. The test will involve not only memorization of facts but also the application and use of those facts in a meaningful manner. This is higher order learning and more relevant to the “real world”.
Conical Map
|
Mercator Map
Used mainly on ships
Project the correct shape of continents
Distorts the area because the longitude lines
are drawn parrallel
Greenland apears to be larger than South America
on this projection
Extra-Mercator map is very useful for
navigation because a straight line on the map corresponds to a compass
heading. If you look carefully at the map below, both parallels and
meridians are straight lines and cross at right angles. The meridians
are equally spaced, but parallels are not. This is because the Mercator
projection is constructed by straightening the lines of longitude and by
increasing the space between latitude equal to the space of longitudinal
widening. This projection is most accurate within 15 degrees of the
equator. Distortion is so severe near the pole that the northern
and southern limits of the map are fixed at the 84th parallel.
Robinson Map
Gives the most accurate shape and areas of
any map projection
Longitude lines are drawn curved like on a
globe