By: Tj Hires

1. Chapter 2 Maps By: Tj Hires And Dillyn Jenkins

2. 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.

3. 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.

4. 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.

5. 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.

6. 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 thatpass through the poles. • They also is the distance east and west measured in degrees from the prime meridian.

7. 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 .

8. Vocabulary • Map- • true north- • Magnetic declination- • Equator- • Latitude an longitude- • Prime meridian- • Mercator projection- • Conic projection-

9. More vocabulary • Azimuthal projection- • Aerial photograph- • Remote sensing- • Topographic map- • Elevation- • Contour lines- • Contour interval-

10. Final vocabulary • Relief- • Index contour-