Using Maps and Mapping Technology. Map Projections Video Clip (approx 3 min)Video Clip An attempt to...
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![Page 1: Using Maps and Mapping Technology. Map Projections Video Clip (approx 3 min)Video Clip An attempt to portray the round - “spherical” Earth on a flat surface.](https://reader035.fdocuments.net/reader035/viewer/2022070406/56649de45503460f94adae58/html5/thumbnails/1.jpg)
Using Maps and Mapping Technology
![Page 2: Using Maps and Mapping Technology. Map Projections Video Clip (approx 3 min)Video Clip An attempt to portray the round - “spherical” Earth on a flat surface.](https://reader035.fdocuments.net/reader035/viewer/2022070406/56649de45503460f94adae58/html5/thumbnails/2.jpg)
Map Projections
• Video Clip (approx 3 min)
• An attempt to portray the round - “spherical” Earth on a flat surface– Creates large areas of
distortions
• There are three common projections
![Page 3: Using Maps and Mapping Technology. Map Projections Video Clip (approx 3 min)Video Clip An attempt to portray the round - “spherical” Earth on a flat surface.](https://reader035.fdocuments.net/reader035/viewer/2022070406/56649de45503460f94adae58/html5/thumbnails/3.jpg)
Mercator Projection
• Features of Earth depicted in the form of a cylinder, stretched out on paper – usually a rectangular map
• Most accurate at point of contact – the equatorial areas
• Distortions away from point of contact - near the poles
![Page 4: Using Maps and Mapping Technology. Map Projections Video Clip (approx 3 min)Video Clip An attempt to portray the round - “spherical” Earth on a flat surface.](https://reader035.fdocuments.net/reader035/viewer/2022070406/56649de45503460f94adae58/html5/thumbnails/4.jpg)
Conic Projection
• A way of mapping the Earth in the shape of a cone ---point of cone situated directly over one of the poles
• A “birds-eye view” of the Earth
• Most accurate at point of contact - mid-latitudes
• Distortions away from point of contact - poles and equatorial areas
![Page 5: Using Maps and Mapping Technology. Map Projections Video Clip (approx 3 min)Video Clip An attempt to portray the round - “spherical” Earth on a flat surface.](https://reader035.fdocuments.net/reader035/viewer/2022070406/56649de45503460f94adae58/html5/thumbnails/5.jpg)
Polar Projection
Portraying Earth or a portion of the Earth in a circular map
Most accurate at point of contact – the poles
Distortion further from the point of contact – mid-latitudes or equatorial area
![Page 6: Using Maps and Mapping Technology. Map Projections Video Clip (approx 3 min)Video Clip An attempt to portray the round - “spherical” Earth on a flat surface.](https://reader035.fdocuments.net/reader035/viewer/2022070406/56649de45503460f94adae58/html5/thumbnails/6.jpg)
Topographic Map• Shows surface surface
featuresfeatures or topographytopography of the Earth
• Shows – natural and artificial
features (fields, forests, rivers, lakes, glaciers, buildings, roads, power-lines, etc.
– elevation (with brown contour lines)
• Little to no distortion• Much more later!
![Page 7: Using Maps and Mapping Technology. Map Projections Video Clip (approx 3 min)Video Clip An attempt to portray the round - “spherical” Earth on a flat surface.](https://reader035.fdocuments.net/reader035/viewer/2022070406/56649de45503460f94adae58/html5/thumbnails/7.jpg)
Satellite Imagery
• Photographs made by means of artificial satellites
• Most often used:– To predict weather
on Earth– To help create
maps of the seafloor, other planets, topography, etc.
– Military intelligenceTyphoon near Japan
![Page 8: Using Maps and Mapping Technology. Map Projections Video Clip (approx 3 min)Video Clip An attempt to portray the round - “spherical” Earth on a flat surface.](https://reader035.fdocuments.net/reader035/viewer/2022070406/56649de45503460f94adae58/html5/thumbnails/8.jpg)
Satellite Image of Earth At Night
![Page 9: Using Maps and Mapping Technology. Map Projections Video Clip (approx 3 min)Video Clip An attempt to portray the round - “spherical” Earth on a flat surface.](https://reader035.fdocuments.net/reader035/viewer/2022070406/56649de45503460f94adae58/html5/thumbnails/9.jpg)
Satellite Image of Ocean Depth
![Page 10: Using Maps and Mapping Technology. Map Projections Video Clip (approx 3 min)Video Clip An attempt to portray the round - “spherical” Earth on a flat surface.](https://reader035.fdocuments.net/reader035/viewer/2022070406/56649de45503460f94adae58/html5/thumbnails/10.jpg)
Satellite Image – Gulf Oil Spill
![Page 11: Using Maps and Mapping Technology. Map Projections Video Clip (approx 3 min)Video Clip An attempt to portray the round - “spherical” Earth on a flat surface.](https://reader035.fdocuments.net/reader035/viewer/2022070406/56649de45503460f94adae58/html5/thumbnails/11.jpg)
GPS “Global Positioning System”
![Page 12: Using Maps and Mapping Technology. Map Projections Video Clip (approx 3 min)Video Clip An attempt to portray the round - “spherical” Earth on a flat surface.](https://reader035.fdocuments.net/reader035/viewer/2022070406/56649de45503460f94adae58/html5/thumbnails/12.jpg)
![Page 13: Using Maps and Mapping Technology. Map Projections Video Clip (approx 3 min)Video Clip An attempt to portray the round - “spherical” Earth on a flat surface.](https://reader035.fdocuments.net/reader035/viewer/2022070406/56649de45503460f94adae58/html5/thumbnails/13.jpg)
Problems with GPS
• Works poorly in the following areas:– Dense forest– Deep canyons– Caves– Underwater
![Page 14: Using Maps and Mapping Technology. Map Projections Video Clip (approx 3 min)Video Clip An attempt to portray the round - “spherical” Earth on a flat surface.](https://reader035.fdocuments.net/reader035/viewer/2022070406/56649de45503460f94adae58/html5/thumbnails/14.jpg)
Latitude & Longitude
![Page 15: Using Maps and Mapping Technology. Map Projections Video Clip (approx 3 min)Video Clip An attempt to portray the round - “spherical” Earth on a flat surface.](https://reader035.fdocuments.net/reader035/viewer/2022070406/56649de45503460f94adae58/html5/thumbnails/15.jpg)
Latitude
• Horizontal/parallel lines on a globe or map
• Measure north or south of the equator
• AKA – Parallels
![Page 16: Using Maps and Mapping Technology. Map Projections Video Clip (approx 3 min)Video Clip An attempt to portray the round - “spherical” Earth on a flat surface.](https://reader035.fdocuments.net/reader035/viewer/2022070406/56649de45503460f94adae58/html5/thumbnails/16.jpg)
On a map latitude looks like this…
equator
![Page 17: Using Maps and Mapping Technology. Map Projections Video Clip (approx 3 min)Video Clip An attempt to portray the round - “spherical” Earth on a flat surface.](https://reader035.fdocuments.net/reader035/viewer/2022070406/56649de45503460f94adae58/html5/thumbnails/17.jpg)
Examples:
• What line of latitude runs through Canada?
equator
![Page 18: Using Maps and Mapping Technology. Map Projections Video Clip (approx 3 min)Video Clip An attempt to portray the round - “spherical” Earth on a flat surface.](https://reader035.fdocuments.net/reader035/viewer/2022070406/56649de45503460f94adae58/html5/thumbnails/18.jpg)
Examples:
• What line of latitude runs through Florida?
equator
![Page 19: Using Maps and Mapping Technology. Map Projections Video Clip (approx 3 min)Video Clip An attempt to portray the round - “spherical” Earth on a flat surface.](https://reader035.fdocuments.net/reader035/viewer/2022070406/56649de45503460f94adae58/html5/thumbnails/19.jpg)
Longitude
• Vertical lines on a globe or map• Measures east or west of the prime meridian• AKA - Meridians
![Page 20: Using Maps and Mapping Technology. Map Projections Video Clip (approx 3 min)Video Clip An attempt to portray the round - “spherical” Earth on a flat surface.](https://reader035.fdocuments.net/reader035/viewer/2022070406/56649de45503460f94adae58/html5/thumbnails/20.jpg)
On a map longitude looks like this…
Prim
e m
erid
ian
Inte
rnat
iona
l Dat
e Li
ne
![Page 21: Using Maps and Mapping Technology. Map Projections Video Clip (approx 3 min)Video Clip An attempt to portray the round - “spherical” Earth on a flat surface.](https://reader035.fdocuments.net/reader035/viewer/2022070406/56649de45503460f94adae58/html5/thumbnails/21.jpg)
Examples
• What is the longitude for the middle of S. America?
Prim
e m
erid
ian
Inte
rnat
iona
l Dat
e Li
ne
![Page 22: Using Maps and Mapping Technology. Map Projections Video Clip (approx 3 min)Video Clip An attempt to portray the round - “spherical” Earth on a flat surface.](https://reader035.fdocuments.net/reader035/viewer/2022070406/56649de45503460f94adae58/html5/thumbnails/22.jpg)
Examples
• What is the longitude for California?
Prim
e m
erid
ian
Inte
rnat
iona
l Dat
e Li
ne
![Page 23: Using Maps and Mapping Technology. Map Projections Video Clip (approx 3 min)Video Clip An attempt to portray the round - “spherical” Earth on a flat surface.](https://reader035.fdocuments.net/reader035/viewer/2022070406/56649de45503460f94adae58/html5/thumbnails/23.jpg)
Putting it together…• What are the coordinates for the following
– X– Y– Z
z
yx
PM
EQ
IDL
![Page 24: Using Maps and Mapping Technology. Map Projections Video Clip (approx 3 min)Video Clip An attempt to portray the round - “spherical” Earth on a flat surface.](https://reader035.fdocuments.net/reader035/viewer/2022070406/56649de45503460f94adae58/html5/thumbnails/24.jpg)
Map Scales
• Verbal Scale– Example 1 inch = 1 mile
• Representative Fraction (R.F.)– Example 1:24,000 (1 map unit is
equivalent to 24,000 land units.)
• Graphic Scale– Example
![Page 25: Using Maps and Mapping Technology. Map Projections Video Clip (approx 3 min)Video Clip An attempt to portray the round - “spherical” Earth on a flat surface.](https://reader035.fdocuments.net/reader035/viewer/2022070406/56649de45503460f94adae58/html5/thumbnails/25.jpg)
Map Symbols