Ch. 7 Map Scales

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Latitude lines are lines that run
NORTH & SOUTH of the
EQUATOR.
Longitude lines are lines that run
WEST & EAST of the
PRIME
MERIDIAN.
When giving coordinates you always give the
Latitude first, followed
by the Longitude.
One of the most widely used of
all maps is the topographic
map. The feature that most
distinguishes topographic
maps is the use of contour
lines to portray the shape and
elevation of the land.
Contour lines are lines that
connect the location of equal
measures of elevation.
Contour intervals show
the difference in
elevation between 2
consecutive contour
lines.
Contour intervals that are wide
apart indicate a gradual slope if
they are close together indicates a
quick rise or drop in elevation.
are points in the real world where the
latitude, longitude & elevation are
recorded to a very high accuracy and
precision. In the real world, these are
marked by small brass discs set in concrete
(or bedrock).
Bench marks are shown on topographic maps with an
X symbol:
X AB1234
Are contour lines representing a closed
depression (such as a sinkhole or a
crater at the top of a volcano). These
contours will be hachured with the tic
marks pointing downslope.
Is the proportion chosen for a
particular map. Simply
defined, scale is the
relationship between distance
on the map and distance on
the ground.
1:24,000-scale map
1:100,000-scale map
1:250,000-scale map
What is broken but is always
right two times a day?
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