UNIT 8 MAPPING Flashcards
what is a map
a representation usually on a flat surface of the whole or a part of an area as seen from above at a reduced size
why make maps
to represent a larger ares than we can see
to show something we can’t see directly
to present info consisely
to show spatial relationships
proportional scales tell us
exactly how much ground has been scaled down to fit on the paper
numerical
what is a graphical scale
the weird picture thingy on a map that show the distance, inaccurate when you resize the map
what are the three types of projection
planar
conical
cylindrical
uninterrupted sinusoidal
map projection
accurate areas
weird shape and unconstant scale
orthographic
“google earth screenshot”
perspective view similar to a globe from a great distance
directions between points are preserved
east west distances accurate
latitude is
North south, lines run around the equator
canada us border at N47 parallel
longitude is E W
run pole to pole.
What are the units for coordinates
Degrees = 60 Minutes = 3600 Seconds
What is UTM
universal transverse mercator
1200 grid segments
numbered 1-60 useful for maps
required elements of. map
NORTH ARROW
SCALE
LEGEND
PROJECT AND SOURCE
TITLE
OTHER SYMBOLS AND CONTOUR LINES
what is a topographic map
a map that uses contour line to show elevation landforms and steepness of slopes
what is relief
range in elevation between highest and lowest points in an area
little hatches in count our lines point
down
