THE GRID SYSTEMTHE GRID SYSTEMCoxwellCoxwell

CHECK YOUR WORKCHECK YOUR WORK PAGE 28 PAGE 28 1. Computer software that 1. Computer software that

can combine and display can combine and display a variety of information a variety of information about the same area.about the same area.

2. GIS layers different 2. GIS layers different types of information on a types of information on a base map.base map.

3. Population growth, how 3. Population growth, how many students, etc.many students, etc.

PAGE 33PAGE 33 1. Government Building1. Government Building 2. Museum2. Museum 3. East3. East 4. Southeast4. Southeast

PAGE 41PAGE 41 1. North America, South 1. North America, South

America, Asia, Australia, America, Asia, Australia, Antarctica, Europe, AfricaAntarctica, Europe, Africa

2. Pacific, Atlantic, Arctic, 2. Pacific, Atlantic, Arctic, Indian.Indian.

CHECK YOUR WORKCHECK YOUR WORK

PAGE 86PAGE 86 1 Early Civilizations1 Early Civilizations 2. Fertile Crescent, 2. Fertile Crescent,

Ancient Egypt, Indus Ancient Egypt, Indus River Valley, and River Valley, and Shang Dynasty.Shang Dynasty.

3. Ancient Egypt, 3. Ancient Egypt, Shang DynastyShang Dynasty

4. They all developed 4. They all developed around rivers.around rivers.

NOW TO THE GRID!NOW TO THE GRID!

The Grid System is The Grid System is lines on globes and lines on globes and maps that provide maps that provide information that can information that can help you easily locate help you easily locate places on the earth.places on the earth.

The lines of the grid The lines of the grid system are called system are called Latitude and Latitude and Longitude.Longitude.

Horizontal, horizontal, horizontal Horizontal, horizontal, horizontal cross the earthcross the earth

Lines of latitude run Lines of latitude run east and west.east and west.

They are also called They are also called parallels.parallels.

The Equator is 0 The Equator is 0 degrees latitude.degrees latitude.

Longitude oh Longitude they’re not Longitude oh Longitude they’re not lines parallel!lines parallel!

Longitude lines run Longitude lines run from North to south.from North to south.

They meet at the They meet at the poles.poles.

They are also known They are also known as meridians.as meridians.

They measure east They measure east and westand west

The Prime Meridian is The Prime Meridian is 0 degrees Longitude.0 degrees Longitude.

I’M ABSOLUTLY RIGHT HERE!I’M ABSOLUTLY RIGHT HERE!

Latitude and longitude Latitude and longitude lines show absolute lines show absolute location.location.

The place is located The place is located where these lines where these lines cross.cross.

RULES, RULES, RULESRULES, RULES, RULES

The starting point for The starting point for Latitude lines is the Latitude lines is the Equator.Equator.

They are numbered They are numbered from 1 to 90 degrees from 1 to 90 degrees and are followed by and are followed by an N or S to show an N or S to show whether they are whether they are north or south of the north or south of the EquatorEquator

The starting point for The starting point for Longitude lines is the Longitude lines is the Prime Meridian.Prime Meridian.

They are numbered They are numbered from 1 to 180 degrees from 1 to 180 degrees followed by an E or a followed by an E or a W to show whether W to show whether they are east or west they are east or west of the Prime Meridian.of the Prime Meridian.

READING LATITUDE AND READING LATITUDE AND LONGITUDE.LONGITUDE.

Latitude is written first. Longitude is written Latitude is written first. Longitude is written second. There is a comma between the second. There is a comma between the two.two.

EXAMPLE:EXAMPLE: 40N, 80W40N, 80W

ANY QUESTIONSANY QUESTIONS