Map Projections, Types of Maps Latitude and Longitude
Map projections Project a round globe onto a flat surface Options? Stretch out some areas Cut out some areas Shrink some areas
Map projections Three properties to consider Area Shape Distance How large is an area? What is the purpose of the map?
Cylindrical projections Shapes are preserved But not area! Mercator projection
Example of Mercator Projection
Mercator Projection Accurate near equator Distortion towards poles Distortion in distances between regions Major Size distortion near poles Example: Greenland
Planar projections Good for navigation Only good for one hemisphere Distorts area, not shape
Conic projections Best for hemispheres or small regions Area and shape only slightly distorted
Types of Maps Political: Represent boundaries between countries and cities Physical: Show detailed features of Earth’s Surface Topographical: Show shape and elevation only Climate: Show weather over a long period of time
Political Map
Physical Map
Topographic Map
Climate Map
Quick Review of Latitude and Longitude Measured in degrees North and South of the Equator. Lines drawn parallel to each other running west to east. Used to determine time zones
Quick Review of Latitude and Longitude Measured in degrees East or West of the prime meridian. Lines drawn running North and South.
Prime Meridian Line that divides the Earth into Eastern and Western Hemispheres Line by which all lines of longitude are measured In Greenwich England
The Equator Imaginary line that divides the Earth into Northern and Southern Hemispheres Receives most direct sunlight