2012sjs

 

map projections

Page history last edited by Dylan 3 wks ago

 

Key terms

Topography, an area’s physical features, such as mountains and valleys

Climate, the average weather conditions-such as temperature, rainfall, snowfall, and wind-in an area. 

Diffusion, the spread of ideas, values, and inventions from one culture to another. 

Region, an area of the world that differs in some ways from the areas around it.

Scale, the relationship between distance on a map and actual distance on earth.

Cartographer, a mapmaker

Legend, an explanation on what the symbols on a map stand for. 

Inset, a smaller map that appears within a larger map and shows some of the same area. 

Thematic map, a map that shows information about a particular topic

Projection, a way of transferring the curved surface of the earth onto a flat map. 

 

 

 

 

Latitude, lines that run east to west and measure north and south from the equator

http://geography.sierra.cc.ca.us/Booth/cultural/chp1_intro/latitude_lines.jpg

 

Longitude, lines that run north to south and measure east and west from the prime meridian. 

 
http://geography.sierra.cc.ca.us/Booth/cultural/chp1_intro/longitude_lines.jpg
 

 

 

 

http://www.unr.edu/geography/GAIN/materials/venndiagram.jpg

Peters projection, Sizes of the continents in relation to each other are accurate, but shapes appear distorted. 

http://www.colorado.edu/geography/gcraft/notes/mapproj/gif/peters.gif

 

Robinson projection, Portrays the size and shape of the continents fairly accurate 

http://www.colorado.edu/geography/gcraft/notes/mapproj/gif/robinson.gif

 

Mercator projection, Maintains the shape of the continents, but distorts their sizes. 

http://w3.impa.br/~pcezar/cursos/GIS/mapproj/mapproj.gif/mercator.gif

 

Goode's Projection

http://proceedings.esri.com/library/userconf/proc98/proceed/to850/pap844/p8441.gif

Comments (12)

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MR. O said

at 11:54 am on Oct 27, 2009

Hello class,
Please add your comments by clicking on the "add comment" icon below.
Based on the reading, notes, and map projections, what are the positive and negative aspects of map projections?

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David said

at 7:32 pm on Oct 27, 2009

The negative aspects are that some of continents come out wrong . And the positive aspect is that at it shows the world.

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Samantha said

at 9:10 pm on Oct 27, 2009

Something positive would be that you can get everything in great detail and you can zoom and stuff. But you don't get the depth of the actual world and maybe the high and low points like it could be on a globe.

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Samantha said

at 9:20 pm on Oct 27, 2009

Wait, nevermind I was thinking of something else. The bad is that not everything is completely acurate and like in Goode's projection, it is all cut up so that might be a little confusing to understand. But in his it still shows the world but in the different sections. In Robinson's projection it has more of a 3 dimensional feel rather than it all being flat like the Mercator projection. That one can confuse a person after seeing a different kind of map.

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Dylan said

at 9:30 pm on Oct 27, 2009

I like all of the projectons of the Earth it is just that for some reason the Goode's projection doesnt make sense to me. Plus the earth is not cut up. Otherwise all of the other projections can help me study cordinance and are smpler for me to read.

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Dylan said

at 9:31 pm on Oct 27, 2009

The Ven Diagram is also helpful.

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Stephanie said

at 7:21 pm on Oct 28, 2009

Well, my favorite projection would be the Robinson projection. This is because it is the one I am most familiar with, and it look like most of the maps I have seen. My worst one is Goode's projection. Not because it is bad, but because the way it is made, in that shape is confusing and hard to understand. Especially if you had to map latitude and longitude. The blue for the ocean is almost impossible to understand, since it is made smaller than the continents, and as we all know 75% of the Earth is made of water. This how I feel about the map projections.

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Stephanie said

at 9:15 pm on Oct 28, 2009

Don't forget to print out the Venn Diagram.

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John said

at 8:24 pm on Oct 29, 2009

The Mercator and Robinson projection were the best because they were to me the most accurate. On the Peters projection everything looks tall and on the Goode projection it's too seperated.

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Ronni said

at 5:46 pm on Nov 2, 2009

These maps are so cool! Goode's Projection is the most interesting map to me because it has a weird shape.

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Stephanie said

at 8:55 pm on Nov 4, 2009

Did we really need the Venn Diagram in class?

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Stephanie said

at 10:28 pm on Nov 4, 2009

Or the correct question is, are we going to need it in class?

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