Chapter 3 Note Cards

Front 1

cartography

Back 1

The science of making maps.

Front 2

conic projection

Back 2

A type of map projection that shows the meridians converging at the poles and equaly spaces parallels. They are made by puting a paper coin around a globe so the cone axis matches the globes axis.

Front 3

contour interval

Back 3

The difference in the elevation between one contour line and the next one.

Front 4

contour line

Back 4

The lines on topographic maps that are used to show elevation. Each contour line conects to points on a map that all have the same elevation.

Front 5

depression contour

Back 5

The short and straight lines that indicate a depression. They are located on close loops to indecate that a object is a depression and not a hilltop.

Front 6

elevation

Back 6

The height above sea level. This is indecated on topographic maps.

Front 7

geomagnetic pole

Back 7

The points on the earth's surface that are just above the oles of the imaginary magnet. The imagiinary compas is tilted so that the geomagnetic and geographic poles are in different locations.

Front 8

gnomic projection

Back 8

A type of map projection in which the parallels appear as cirecles that are spaced unevenly and meridians that appear as straight lines that radiat from the center. It is made by touching a sheet of paper to one of the poles on a globe.

Front 9

great circle

Back 9

Any circle that divides the earth in half.

Front 10

index contour

Back 10

Every 5th line on a topographic map that is made darker than the rest so it can be used as a reference.

Front 11

latitude

Back 11

The angular distance north or south of the equator.

Front 12

legend

Back 12

A list of map symbols and their meanings.

Front 13

longitude

Back 13

The angular distance east or west of the prime meridian.

Front 14

magnetic declination

Back 14

The angle between the direction of the earth's geomagnetic pole and the direction that a compass needle points.

Front 15

map projection

Back 15

A flat map that represents a three-dimentional curved surface.

Front 16

mean sea level

Back 16

The point midway between the highest and lowest tide levels of the ocean.

Front 17

mercator projection

Back 17

A map projection in which the meridians appear as straight, evenly spaced, parellel lines and form a grid with the parellels that are also straight and even spaced parellel lines. It is made by wrapping a cylinder of paper around a globe.

Front 18

meridian

Back 18

A semicircle on the earth that runs from pole to pole.

Front 19

parellel

Back 19

Any circle that runs from east to west around the earth. These lines run parellel to the equator.

Front 20

polyconic projection

Back 20

A map made by putting to gether a series of conic projections that are of adjoining areas.

Front 21

prime meridian

Back 21

The meridian that passes through Greenwich, England. This has been designated as zero degrees.

Front 22

relief

Back 22

The distance in elevation between the highest and lowest points of an area.

Front 23

scale

Back 23

The relationship between the distance shown on a map and the acual distance.

Front 24

topographic map

Back 24

A map that shows the surface features of the earth.

Front 25

topography

Back 25

The surface features of the earth.

Front 26

true north

Back 26

The direction of the geographic north pole.