The Global Grid
The global grid makes it possible to
state the “absolute location” of a
place – exactly where it is.
http://www.psdgraphics.com/backgrounds/world-globe-background/
http://matagalatlante.org/nobre/featpost/doc/featexamples.html
Absolute location – longitude &
latitude – is like a global address.
http://amyrondinel.com/2010/09/home-is-where-the-heart-is/
Los Angeles, California: 34°N 118W°
http://www.hightunnels.org/ForEducators/Planning/FullMoonFarmCaseStudy/planningorientationlatitude.htm
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
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
on the
Equator in
Ecuador
http://www.elmundodeanders.com/Mitad%20del%20Mundo.htm
http://www.southernhorizons.com/images/galapaos/Mapsinf/SAmap.jpg
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/
http://ahunsberger.blogspot.com/2008/01/geog-411-political-maps.html
in Gabon
http://www.flickr.com/photos/27767476@N04/2987565877/
http://www.flickr.com/photos/33357097@N00/2334967076/
http://www.travelpod.com/travel-photo/bonthorn/1/1210984380/crossing-the-equatorx.jpg/tpod.html
in Uganda
http://www.travelpod.com/travel-blog-entries/jmo/jmo_world_tour/1088505180/tpod.html
and in
Kenya
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.php
http://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.shoponline2011.com/m~c-laptop-computers~b-462~f-1-646838_679798-679809.aspx
http://www.nauticus.org/currptpless01.html
Latitude is how you go up and
down the globe.
So latitude is all about how far you
are from the Equator –
up or
down the
globe
(north or
south).
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
And longitude lines actually all meet
at the poles.
http://www.mapsfordesign.com/North-Pole-Global-Projection-PowerPoint-map.html
http://www.mapsfordesign.com/South-Pole-Global-Projection-PowerPoint-Map.html
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
Graphicmaps.com
http://www.fotosearch.com/clip-art/spanish.html
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!
Portugal owned the Madeira
Islands, so they thought it was a
good idea to use THEIR land for
the Prime Meridian location.
http://www.math.nus.edu.sg/aslaksen/gem-projects/hm/0203-1-10-instruments/glossary.htm
This Prime Meridian was used
by most mapmakers for the next
300 years.
When the
British got
control of the
Atlantic, they
set a new
Prime
Meridian,
right through
England!
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
Graphicmaps.com
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
Royal Observatory,
Greenwich, England
the Prime Meridian
http://www.randform.org/blog/?p=1472
http://www.flickr.com/photos/31808957@N04/2993256325/
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
0°
0° ?
http://geographyworldonline.com/tutorial/lesson3.html
This buoy marks where the Prime Meridian and the Equator
intersect.
http://www.fredsplace.org/images/dallas/dallas1/week5/