By: Tj Hires And Dillyn Jenkins
Chapter 2 Maps
Topographic map
• Is the map that shows surface features or the topography of the earth.
• It shows both natural features such as rivers lakes and mountains.
• It is also made by human features such cities roads an bridges.
• It also shows the elevation.
Contour lines
• They are lines that connect points of equal elevation.
• One contour lines can connect points on a map that have an elevation of 100ft another one will connect of 200ft.
Contour interval
• It is the difference in elevation between one contour line an the next.
• For an example a map with a contour interval of 20ft would have contour lines every 20ft, of elevation change every 20ft.
Index contour
• It is a dark heavy contour line that is usually every fifth line and that is labeled by elevation.
• It is on many topographic maps, the mapmaker uses it to make reading the map easier.
Latitude and longitude
• Latitude lines are imaginary drawn around the earth parallel to the equator.
• Latitude is the distance north to south measured in degrees from the equator.
• Longitude lines are imaginary that pass through the poles.
• They also is the distance east and west measured in degrees from the prime meridian.
Map projections
• They are used to transfer the image of earths curve surface on to the flat surface.
• No Map projections of the earth can represent the surface of the sphere exactly.
• All flat maps have some amount of distortion .
Vocabulary• Map-• true north-• Magnetic declination-• Equator-• Latitude an longitude-• Prime meridian-• Mercator projection-• Conic projection-
More vocabulary• Azimuthal projection-
• Aerial photograph-
• Remote sensing-
• Topographic map-
• Elevation-
• Contour lines-
• Contour interval-
Final vocabulary• Relief-
• Index contour-