1. A+ Introduction to Mapping
How could you describe the exact location of a dot on a basketball?
It would be just as hard to describe a position on earth without some sort of grid system to give you an exact location.
This grid system is called latitude and longitude. A+

2. Separate Earth into northern and southern hemispheres
Latitude Lines
Latitude Lines
Drawn east to west
Called Parallels
Separate Earth into northern and southern hemispheres
Measure north to south
Labeled using N or S
(N) if located in the northern hemisphere.
(S) if located in the southern hemisphere.
RANGE: degrees
Mr. Fetch's Earth Science Class A+

3. A+ Latitude Lines 90°N North Pole 23.5°N Tropic of Cancer 0° Equator
23.5° S Tropic of Capricorn
90°S South Pole A+

4. A+ Latitude Lines For example: The tropic of cancer is 23.5°N.
What is the range of possible latitude?
0° - 90° N
and
0° - 90° S
Label north if in northern hemisphere and south if in southern hemisphere. A+

5. Separate Earth into eastern and western hemispheres
Longitude Lines
Longitude Lines
Drawn north to south
Called Meridians
Separate Earth into eastern and western hemispheres
Measure east to west
Labeled using E or W
(E) if located in the eastern hemisphere.
(W) if located in the western hemisphere.
RANGE: degrees A+

6. A+ Longitude Lines Longitude lines are curved and meet at the poles.
0° Prime Meridian A+

7. A+ Latitude and Longitude Lines
We can put latitude and longitude together to find exact locations on earth’s surface.
Example: Milwaukee, Wisconsin
Use latitude to find how far north or south.
Use longitude to find how far west or east.
44°N, 90°W
Latitude is always first. A+

8. A+ GPS: Global Positioning System
A GPS is a Global Positioning System that uses satellites to find exact locations on Earth’s Surface.
GPS was put into effect by the department of defense for military use, but has now become used by the public.
20,200km above A+