Transcript Using Thematic Maps

Name
that map
type!
• What does this model show? (3 terms/names)
• What point is it trying to make?
Thematic Maps: Provides info on a
single topic (population, rainfall…)
• Using Thematic Maps: shows
comparison of statistical data, like
population or income
-can view facts about places by
comparing the patterns of shaded
areas or colors on the map.
Chloropleth maps
(4-H/Ohio .. Afr.savannahs)
(Gk.: for “place” + “value or magnitude”):
Thematic map w/ areas colored,
shaded, dotted, or hatched so
have darker/lighter areas in
proportion to density of whatever
aspect U R are looking
-show amt. of some “phenomenon”
(some event or thing which
occurs) like ratios, %, etc., using
these colors
Types of maps & info on maps:
• physical maps: show landforms of
an area
• Use colors to show relief— 
difference levels in land elevations
-green usually = lo elevations
-orange or brown = hi elevations
• Topographical: Presents
horizontal & vertical positions of
features represented

-shows relief in measurable form.
-Uses contour lines (isolines) to
show the shape & elevation of an
area
(shape of the Earth’s surface)
-Lines close together indicate steep
terrain
-Lines far apart indicate flat terrain.
EX:?
Types of Maps
Political maps: divided by states
(aka “countries”), cities, counties,etc.

Usually show rivers, major lakes,
oceans, etc., elevations….capital
cities show w/ star
Economic maps: type of thematic
map that shows natural resources
in areas and/or ways that people
make a living; legends may show
mines, factories, 
power plants, etc.
NOTE: economy:
the way the money
is earned, used, spent,
controlled, issued,
invested, etc.
Cartogram here shows
GDP (gross domestic
product) thru world &
electoral votes
Cartogram: Shows
some quantity or
value by shape or
size of a region
Reference Map-  
Tool to
view boundaries of
census geographies,
cities, counties,
cities/towns, urban
areas, congressional
districts, census tracts,
census blocks, & more.
Note: some of these
terms overlap:
EX: Cartogram is also
thematic
Match, including inset in 1st map
Conical Goode’s Mercator
Peters
Robinson
2 Homolosine projection maps:
Homolosine = continuous land masses…like peeled orange
Bartholomew’s polar
Goode’s
GIS: Means
WHAT??
KNOW the
LAYERS ….
& that there
are MORE
here than in
your book!!