WHAT IS LONGITUDE AND LATITUDE

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WHAT IS LONGITUDE AND LATITUDE

• Notes in SINK

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HOW IT STARTED!

• A key geographical question throughout the human
  experience has been, "Where am I?"

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HISTORY

• In classical Greece and China, attempts were
  made to create logical grid systems of the world
  to answer this question.
• The ancient Greek geographer Ptolemy created a
  grid system and listed the coordinates for places
  throughout the known world in his book Geography.
  
• But it wasn't until the middle ages that the
  latitude and longitude system was developed and
  implemented.
• This system is written in degrees, using the
  symbol .

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DEFINITION (SINK)

• a system developed by Geographers to pinpointing
  exact or absolute locations everywhere on Earth.
  
• Geographers use a grid made up of two sets of
  lines that cross each other, like the lines on
  graph paper.
• You can identify any place on Earth by saying
  which two grid lines cross there.

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GLOBES (SINK)

• The globe is the more accurate way to show Earth,
  since the globe is spherical like Earth.
• The North Pole is the farthest Northern point on
  a globe
• The South Pole is the most Southern point on a
  globe.
• All directions on Earth are figured from these
  two points.

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LINES ON A GLOBE

• There are important lines on a globe.
• First there are parallels or latitude lines.
• Second, there are meridians or longitude lines.

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LINES OF LATITUDE

• Lines of latitude are imaginary circles that run
  east and west around the globe known as
  parallels.
• These parallels divide the globe into degrees.
• Lines of latitude measure distance north and
  south of the equator.

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LINES OF LATITUDE-EQUATOR

• The Equator is 0 degrees latitude.
• The letter N or S that follows the degree
  symbol tells you if the location is north or
  south of the equator.
• Ex North Pole- 90 degrees N latitude
• South Pole- 90 degrees S latitude

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LINES OF LONGITUDE

• Lines of Longitude, are imaginary lines also
  known as meridians, run from the North Pole to
  the South Pole.
• Longitude measures distance east and west of the
  Prime Meridian.

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PRIME MERIDIAN

• Prime Meridian is 0 degrees longitude.
• An imaginary line that runs North and South and
  divides the earth into Western and Eastern
  Hemispheres.
• The letter E or W tells you if the location
  is east or west of the Prime Meridian.

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EASTERN AND WESTERN HEMISPHERES

• Everything east of the Prime Meridian for 180
  degrees is in the Eastern Hemisphere.
• Everything west of the Prime Meridian for 180
  degrees is in the Western Hemisphere.

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LATITUDE AND LONGITUDE
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LETS HEAR FROM SOMEONE ELSE!
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YOUR TURN TO PRACTICE

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