Latitude-

Longitude

Coordinate

System

A. Coordinate System- system of

locating a point on a surface by

means of 2 numbers.

B. Latitude- Longitude Coordinate System-

- used to locate positions on Earth (curved surface)

1) Latitude- Angular distance

North and South of the Equator.

A) North –South lines above and below Equator

B) Parallels- lines of latitude are parallel to the Equator.

C) All parallels are smaller than the Equator

Lines of Latitude

http://plantwatch.sunsite.ualberta.ca/library/images/lat.jpg

These

parallel

lines on the

globe are

lines of

latitude.

Latitude (lines of parallel)

distance in degrees

north or south of the equator.

Lines of latitude are horizontal.

0o - equator

90o N- North pole

90o S- South Pole

LATITUDE

Latitude

Latitude

angles are

measured

from the

center of the

earth (vertex

of the angle)

http://www.csmate.colostate.edu/cltw/cohortpages/viney/latitude.html

Degrees, Minutes, Seconds

360 degrees in a circle

1 degree is 60 minutes

1 minute is 60 seconds

2) Longitude- Angular distance

east or west of the Prime Meridian

a) Prime Meridian- reference line 0°

b) Connects North and South Poles

c) Meridian- longitude lines

d) non-parallel

e) International Date Line (180°)

Prime Meridian

The Prime

Meridian passes

through

Greenwich,

England

http://www.mrsciguy.com/sciimages/longitude1.jpg

Prime Meridian Marker

A marker showing the

actual location of the

Prime Meridian in

Greenwich, England

http://www.cavinguk.co.uk/holidays/London200

6/normal/PrimeMeridian.jpg

Lines of Longitude

http://plantwatch.sunsite.ualberta.ca/library/images/long.jpg

Longitude Angles•Longitude is

measured in

degrees east or

west of the Prime

Meridian

•Angles are

measured from the

center of the earth

(vertex of angle)

east or west of the

Prime Meridian

http://www.csmate.colostate.edu/cltw/cohortpages/viney/latitude.html

Equator Latitude 0o

Latitude: (90oN to 90oS)

Latitude 23½o NorthTropic of Cancer

Latitude 23½o SouthTropic of Capricorn

Longitude 30o East

Longitude 60o East

Longitude 30o West

Longitude 60o West

Positioning on the Earth’s Surface

East is the direction of rotation of the Earth North Pole

South Pole

23½o

23½o

66½o90o

900

21st June

22nd December

22nd Sept

20th March

30oE60oE90oE90oW30oW60oW

Longitude 90oEastLongitude 90o West

Prime Meridian

0o Longitude

Longitude: (180oE to 180oW)

Latitude and Longitude together enable the fixing of position on the Earth’s surface.

Now you’re ready to find

some locations on a map!