1. Aim: How do we locate positions on Earth?
Latitude and Longitude

2. Roughly spherical (like a basketball)
The Shape of Earth
Roughly spherical (like a basketball)

3. Imaginary Lines We use giant circles drawn around the Earth:
LEFT and RIGHT: LATITUDE
UP and DOWN: LONGITUDE

4. LATITUDE
LEFT
And
RIGHT
(Parallels)

5. LATITUDE
Starting Point = EQUATOR

6. LATIITUDE
How far North or south of the Equator are you?

7. LONGITUDE UP
and
DOWN
(Meridians)

8. LONGITUDE
Starting
point is the
Prime Meridian

9. How far east or west of the prime meridian are you?
LONGITUDE
How far east or west of the prime meridian are you?

10. The Global Grid

11. The Global Grid