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Latitude and Longitude

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Michael Miller

on 9 September 2013

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Transcript of Latitude and Longitude

Latitude and Longitude
Cardinal Directions

Intermediate Directions

South West
North West
North East
South East
Always say North or South first.
Example: Say “North East” not “East North”

Secondary Intermediate
These are in between a cardinal direction and intermediate direction.
NNW – north north west
NNE – north north east
ENE – east north east
ESE – east south east
SSE – south south east
SSW – south south west
WSW – west south west
WNW – west north west

Latitude: distance north or south of the equator.
The lines are called parallels
0° is the equator - the most important line of latitude
23.5° N – Tropic of Cancer
23.5 ° S – Tropic of Capricorn
66.5° N – Arctic Circle
66.5° S – Antarctic Circle
90° N – North Pole
90° S – South Pole

Longitude: distance east or west of the prime meridian.
The lines are called meridians
Prime Meridian - 0 ° longitude (most important line of longitude)
Unlike latitude, which has the equator as a natural starting position, there is no natural starting position for longitude.
Therefore, a reference meridian had to be chosen.
Runs through Greenwich, England

180 ° Longitude - The International Date Line (IDL) is an imaginary line on the surface of the Earth opposite the Prime Meridian.
This line offsets the date as one travels east or west across it.

The date to the east of the line is one day earlier than that to the west of the line.


180° longitude - The International Date Line
We use latitude and longitude to pinpoint specific locations around the Earth.
Where a line of latitude and longitude intersect, it is called a coordinate.
Example: The coordinates for Wallingford, PA are 40 ° North, 75 ° West
We will use this throughout the year to help us learn about Earth Science!
0° Longitude: The Prime Meridian
Wallingford, PA
40 ° N, 75 ° W
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