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Reading Maps and Facing Threats (Intro (Objectives (1st objective is to…
Reading Maps and Facing Threats
Manipulating Maps
NIMBY=Not in my back yard.
We can make certain countries look bigger with the power of distortion.
Maps are often drawn by Artists and not Cartographers.
Scale
Scale=Ratio or distance on a map to distance in real life.
Smaller scale for a bigger map.
The more area represented on a map the
less accurate it will be.
Intro
70% of Earth's space is Water/Ice
Shortest distance between U.S.
and China is up and over.
Objectives
1st objective is to digest all information contained within a map.
2nd objective is to make sure you are not misusing the map in any way
Most habitable land is North of the equator.
Legends & Symbols
Legends
Reading the legend is always a good idea and is recommended.
Symbols
To get the most out of a map you have to decode the hardest symbols.
Symbols are essential to thematic maps to keep them in order.
Topography
Using shadows is one way to show topography on a map.
Using topographic lines is another more accurate way of define topography.
A busy topo map has high relief.
Relief is the vertical distance between high and low points.
The U.S. did not convert over to the metric system due to a law that separated townships by exactly 6 miles. This lead to the ingrained use of miles rather than Metres.
Mapping an ever changing world
Maps will be printed for a long time past now.
Breakup of Soviets and Yugoslavia changed map a lot.
Map Projections
Maps can be used for propaganda to make a country to look bigger than it really is. Northern countries love the Mercator map.
Mercator Lines
"Horizontals" are called parallels
Don't meet anywhere.
Meridians are the "vertical" lines.
Meet at North and South poles.
Projection Types
Cylindrical is as if you wrapped
a cylinder of paper around the globe.
Conical maps show the world from a cone view
at the top of the globe.
Equal-area projections form unaltered shapes
of countries on a map.
GPS allows discoverers to pick up where they left off by showing them previous locations even with changed terrain.
Clay to Computers
Different Styles of Maps
Clay maps made by Mesopotamians.
Satellite maps made today
Mapping Achievements
Magellan circumnavigates the world
Mercator made a projection with which we draw maps
Chinese mapped Asia and Africa earlier than the Europeans did
Europeans made full map of the World.
Technological age brought new
kinds of maps that were not terrestrial at all.
Direction
Compass direction reliant
European streets are not made to be referenced with a compass rose
Americans reference the compass rose.
Which way North or 12 o'clock should be
Map readers need to check a maps orientation.
12 o'clock is whichever way you are moving.
No specification for North or South poles on a map
The are maps made in Aussie and Zealand that show it on top of the map.
