The Global Grid

The global grid makes it possible to state the “absolute location” of a

place – exactly where it is.

http://matagalatlante.org/nobre/featpost/doc/featexamples.html

http://www.psdgraphics.com/backgrounds/world-globe-background/

Absolute location – longitude & latitude – is like a global address.

http://amyrondinel.com/2010/09/home-is-where-the-heart-is/

http://www.hightunnels.org/ForEducators/Planning/FullMoonFarmCaseStudy/planningorientationlatitude.htm

Los Angeles, California: 34°N 118W°

Washington, DC: 38°N 77W°

Seattle, Washington: 47°N 122W°

Tulsa, Oklahoma: 36°N 95°W

Oklahoma City: 35°N 97W°

The absolute location of any place is the

latitude + the longitude.

http://www.ukdivers.net/chartwork/chartintro.htm

LATITUDE

http://www.ukdivers.net/chartwork/chartintro.htm

LATITUDE lines are

the FLAT lines.

http://www.ukdivers.net/chartwork/chartintro.htm

LATITUDE lines also get shorter as you get closer to the North Pole or the South Pole.

http://www.ukdivers.net/chartwork/chartintro.htm

Latitude lines run flat east and west, but they tell how far north or

south you are of the Equator.

Think of latitude like the rungs of a ladder.

(Ladder sounds a lot like

latitude).

It’s how you go up and down the globe.

http://geographyworldonline.com/tutorial/lesson1.html

Anywhere you are on the

30°N line, you are 30° north of the Equator.

And anywhere you are on the 30°S line, you are 30° south of the Equator.

LATITUDE

http://www.worldatlas.com/aatlas/newart/locator/equator.htm

http://www.southernhorizons.com/images/galapaos/Mapsinf/SAmap.jpghttp://www.elmundodeanders.com/Mitad%20del%20Mundo.htm

on the Equator in Ecuador

http://www.leeabbamonte.com/lee/south-america/

and in Brazil

http://www.questconnect.org/sa_j_brazil_crossing.htm http://www.advrider.com/forums/showthread.php?t=314904

Macapá, Brazil

http://www.flickr.com/photos/teamtrev/35447999/

in Gabon

http://www.flickr.com/photos/27767476@N04/2987565877/ http://www.flickr.com/photos/33357097@N00/2334967076/

http://ahunsberger.blogspot.com/2008/01/geog-411-political-maps.html

in Uganda

http://www.travelpod.com/travel-photo/bonthorn/1/1210984380/crossing-the-equatorx.jpg/tpod.html

http://www.travelpod.com/travel-blog-entries/jmo/jmo_world_tour/1088505180/tpod.html

and inKenya

http://www.fimafrica.org/7.html

http://www.wainscoat.com/kenya/samburu.html http://www.travelblog.org/Bloggers/Twiga-Kali/

in Indonesia

http://www.horizonsunlimited.com/newsletter/2008-10.shtml http://afe.easia.columbia.edu/main_pop/kpct/ct_seast.htm

http://indahnesia.com/picture/SUM/004/equator_monument.phphttp://www.tripadvisor.com/LocationPhotos-g317101-Pontianak_Borneo.html#27121388

Two other “famous” lines of latitude are the Tropic of Cancer

and the Tropic of Capricorn.http://usdoctor.tistory.com/115

So remember to think of latitude like

the rungs of a ladder.

http://www.nauticus.org/currptpless01.htmlhttp://www.shoponline2011.com/m~c-laptop-computers~b-462~f-1-646838_679798-679809.aspx

Latitude is how you go up and down the globe.

up or down the

globe (north or south).

So latitude is all about how far you are from the Equator –

questions on latitude. . .

LONG

ITUDE

http://www.ukdivers.net/chartwork/chartintro.htm

Longitude lines are always

long.

Lines of longitude get closer together

as they move away from the Equator & to the poles.

http://www.mapsfordesign.com/North-Atlantic-Ocean-Global-Projection-PowerPoint-Map.html

http://www.mapsfordesign.com/North-Pole-Global-Projection-PowerPoint-map.html http://www.mapsfordesign.com/South-Pole-Global-Projection-PowerPoint-Map.html

And longitude lines actually all meet at the poles.

Longitude lines tell us

how far east or west we are from the

Prime Meridian.

http://www.ukdivers.net/chartwork/chartintro.htm

Anywhere you are on the

30°E line, you are 30° east of

the Prime Meridian.

http://www.hammondmap.com/catalog/classroom_activities/latlong1.html

Anywhere you are on the

30°W line, you are 30° west of the Prime

Meridian.

http://www.hammondmap.com/catalog/classroom_activities/latlong1.html

The Equator is a real location. But who decided where to put the

Prime Meridian?

In the 1500s, when the Portuguese controlled the Atlantic, they drew the first Prime Meridian passing through

the Madeira Islands.

Graphicmaps.com

Portugal owned the Madeira Islands, so they thought it was a good idea to use THEIR land for

the Prime Meridian location.

We control the Atlantic. So, of course, it makes perfect sense that we would put the Prime

Meridian through OUR land. WE are the center

of the world!

http://www.fotosearch.com/clip-art/spanish.htmlG

rap

hic

ma

ps.

com

This Prime Meridian was used by most mapmakers for the next

300 years.

http://www.math.nus.edu.sg/aslaksen/gem-projects/hm/0203-1-10-instruments/glossary.htm

When the British got

control of the Atlantic, they

set a new Prime

Meridian, right through

England!Graphicmaps.com

Graphicmaps.com

NOW look who’s in charge of the Atlantic! England is now the center of the universe, so

we will re-draw the Prime Meridian to go through England!

http://colquitt.k12.ga.us/wjwpg2/Explorers/explor.htm

In 1884, 25 countries reached agreement at a conference in Washington D.C. that

the location in Greenwich, England, would be the “Prime Meridian” - zero

degrees.

Over a period of many years, other countries accepted and adopted the decision.http://www.brannelastronomy.com/articles/meridian.htm

http://www.randform.org/blog/?p=1472 http://www.flickr.com/photos/31808957@N04/2993256325/

the Prime Meridian

Royal Observatory, Greenwich, England

http://www.flickr.com/photos/black_coffee_blue_jeans/279214384/

in France

http://www.flickr.com/photos/12989909@N07/2098367402/

in Spain

http://picasaweb.google.com/lh/photo/5xiaEepc3LBmkL8BiYQkMA

http://reference.findtarget.com/search/Greenwich_Mean_Time/

in Ghana

http://www.flickr.com/photos/ascentstage/2689066897/

So remember that longitude lines tell us

how far east or west we are from the

Prime Meridian.

http://www.ukdivers.net/chartwork/chartintro.htm

questions on longitude. . .

http://geographyworldonline.com/tutorial/lesson3.html

0° 0° ?

http://www.fredsplace.org/images/dallas/dallas1/week5/

This buoy marks where the Prime Meridian and the Equator intersect.