Latitude And Longitude
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Latitude And Longitude






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Latitude And Longitude Latitude And Longitude Presentation Transcript

  • Latitude and Longitude
  • Latitude and Longitude
    • Lines of Latitude and Longitude are imaginary lines that encircle the Earth in either an East- West direction or in a North-South direction
    • Together they form a grid which can be used to identify locations on the Earth’s surface
  • Latitude and Longitude
    • When using these lines to find a location the coordinates are always given latitude first and then longitude
  • Latitude
  • Latitude
    • Latitude is the name for a group of imaginary lines that run parallel to the Equator
    • The Equator is the 0 degree line and splits the earth into two equal halves –northern and southern hemispheres
    • Each hemisphere is divided into 90 degrees, from the Equator to the Pole
  • Latitude
    • When finding a point in the Northern hemisphere the latitude is given as (x) degrees N
    • For a point in the Southern hemisphere the coordinates would be (x) degrees S
  • Latitude
    • Lines of latitude get smaller as they get further north because the distance around the Earth decreases
    • At the Poles the latitude is 90 degrees and the circular distance is 0km, each Pole being just a single point
  • Latitude
    • There are several major lines of Latitude other than the Equator and the Poles
    • They are the Tropic of Cancer, the Tropic of Capricorn, the Arctic Circle and the Antarctic Circle
  • Longitude
  • Longitude
    • Lines of longitude run north-south around the planet
    • They begin at the Prime Meridian and split the Earth into East and West hemispheres
    • There are 180 degrees in each hemisphere
  • Longitude
    • When locating a point in the Eastern hemisphere the longitude is given as (x) degrees E
    • For a point in the Western hemisphere the longitude would be (x) degrees W
  • Longitude
    • All lines of longitude are the same length
    • There is only one important line of Longitude other than the Prime Meridian – the International Date Line
    • This is the 180 degree line in both directions
  • Latitude and Longitude Finding Locations Finding Locations
    • To use latitude and longitude to find a location you simply follow the lines until they meet at the point you are looking for
  • Latitude and Longitude Finding Locations Finding Locations
    • The latitude is always the first coordinate given
    • It will be a number between 0 and 90 degrees and will be followed by either an N or an S, depending on which hemisphere the location is in
    • Longitude is always the second number and will be between 0 and 180 degrees, followed by either an E or a W
  • Latitude and Longitude Finding Locations Finding Locations
    • Not all points are located neatly at the points where the lines intersect
    • To find locations between the points each degree is split into 60 smaller sections called minutes
    • For example, the coordinates for Orono are 43 59N 78 36W
  • Latitude and Longitude Finding Locations Finding Locations
    • The coordinates for Orono mean that the village is located 43 degrees and 59 minutes north of the Equator and 78 degrees and 36 minutes west of the Prime Meridian
    • If you are using a GPS device there will be an additional set of numbers for each coordinate, called seconds
    • Seconds subdivide the minutes into even smaller sections and provide additional accuracy