Chapter 1Chapter 1

A map is a A map is a representation of the representation of the Earth’s surfaceEarth’s surface

Map of Charlotte, NC

The EXACT location of the red The EXACT location of the red star on the basketball below? star on the basketball below?

How could we make itHow could we make iteasier to do this?easier to do this?

The EXACT location of the red The EXACT location of the red star on the Earth below? star on the Earth below?

How could we make itHow could we make iteasier to do this?easier to do this?

It would be It would be impossible toimpossible to

describe a position describe a position onon

Earth without some Earth without some sortsort

of of grid systemgrid system to give to give youyou

an exact location.an exact location.

This grid system is This grid system is calledcalled

latitude and latitude and longitudelongitude. .

Hemisphere = Half of the EarthHemisphere = Half of the Earth

The The equatorequator

cuts the Earth cuts the Earth

into the into the

NORTHERNNORTHERN

and and

SOUTHERNSOUTHERN

hemisphereshemispheres

The The prime prime

meridian meridian

cuts the Earth cuts the Earth

into the into the

EASTERNEASTERN

and and

WESTERNWESTERN

hemisphereshemispheres

Lines of latitudeLines of latitude measure the distance measure the distance NORTHNORTH or or SOUTHSOUTH of the equator of the equator

Measured from 0-90 degrees, N & S of the Measured from 0-90 degrees, N & S of the Equator (0 degrees)Equator (0 degrees)

There are 180 total degrees of Latitude. There are 180 total degrees of Latitude.

Think of latitude lines like steps on a Think of latitude lines like steps on a ladderladder

degrees

As your latitude As your latitude INCREASESINCREASES, your , your temperature temperature DECREASESDECREASES!!!!

0

90

90

Lines of longitude Lines of longitude measure the measure the distance distance EASTEAST or or WESTWEST of the prime of the prime meridianmeridian

Measured 0-180 degrees, E & W of the Measured 0-180 degrees, E & W of the Prime Meridian (0 degrees)Prime Meridian (0 degrees)

LongitudLongitude lines e lines are are curvedcurved and and meet at meet at the the polespoles..

Latitude – Latitude – HORIZONTALHORIZONTAL lines lines

Longitude – Longitude – VERTICALVERTICAL lines lines

http://www.youtube.com/watch?v=swKBi6hHHMA

Put on Your Thinking Cap

To find a location, you need To find a location, you need BOTHBOTH the the latitude and the longitude latitude and the longitude measurement!!measurement!!

A -_______________

B - ______________

C -_______________

D - ______________

E -_______________

F - ______________

G -_______________

H - ______________

I - _______________

J - _______________

150W 0

120W 60N

60E 60N

45W 15N

90W 75N

120W 60S

0 30S

75E 15S

150E 45S

180E 30N

A -_______________

B - ______________

C -_______________

D - ______________

E -_______________

60E 30N

30W 30S

90W 0

75W 45N

25W 13N