Chapter 3 - Models Of The Earth

Front 1

relief

Back 1

difference in elevation between the highest and lowest point on mapped area

Front 2

Topography

Back 2

a shape of a land

Front 3

elevation

Back 3

distance above/below sea level

Front 4

index contour

Back 4

bolder, darker lines on a map (labeled every 5th line)

Front 5

contour interval

Back 5

2mt. Of elev change from one contour line to the next

Front 6

North and South geographic poles

Back 6

reference points that are intersected by the earth's axis of rotation

Front 7

parallels

Back 7

circles that run east and west around the world parallel to the equator

Front 8

latitude

Back 8

the angular distance north or south of the equator

Front 9

meridians

Back 9

used to establish east-west locations

Front 10

prime meridian

Back 10

passes through Greenwich, England. It is at 0 degrees.

Front 11

great circle

Back 11

any circle that divides the globe into halves

Front 12

geomagnetic poles

Back 12

the points on earth's surface just above the poles of the imaginary magnet inside earth

Front 13

magnet declination

Back 13

the angle between the direction of the geographic pole and the direction in which the compass needle points

Front 14

true north

Back 14

the direction of the geographic North Pole

Front 15

cartography

Back 15

the science of map making

Front 16

cartographers

Back 16

map makers

Front 17

map projection

Back 17

a flat map that represent the three-dimensional curved surface of a globe

Front 18

Mercator projection

Back 18

best at the equator- distorts the poles

Front 19

Gnomic projection

Back 19

globe looking figure that projects the great circles as straight lines

Front 20

Conic projection

Back 20

shows accurately: areas near the parallel of latitude where the cone touches are fairly accurate areas far from the line of contact are distorted

Front 21

polyconic projections

Back 21

a series of conic projections that may be used to map a number of neighboring areas

Front 22

explanation

Back 22

a legend on the map

Front 23

scale

Back 23

indicates the relationship between distance as shown on the map and actual distance

Front 24

elevation

Back 24

height above sea level

Front 25

mean sea level

Back 25

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

Front 26

depression contours

Back 26

contour lines that form closed loops that indicate a hilltop or a depression.