Latitudes and Longtudies

Reviewing the definition of latitude as a distance of a place North or South from the equator.

Lines of Latitudes are imaginary lines drawn on a map running from East to West.
Latitude is the distance North or South of the Equator. Lines of Longitudes are imaginary lines drawn on a map running from north to South.
Longitude is the distance of a place East or West of the prime meridian ( Greenwich meridian)


The major latitudes include


Equator – 00
Tropic of cancer 23½ ̊ N
Tropic of Capricorn 23½ ̊ S
Others are Arctic Circle 66½ ̊N and Antarctic circle 66½ ̊ S

IMPORTANCE OF THE EQUATOR

  • It determines the climate of an area.
    The equator divides the world into two equal parts.
  • The equator determines how far North or South a place is i.e. (It is where latitudes readings begin from)
  • The equator is marked 00 because the numbering of all latitudes starts from it. Note: All lines of latitude are also referred to as Parallels

THE DIAGRAM SHOWING MAJOR LATITUDES

major latitudes

LONGITUDES.


I. Line of Longitudes are imaginary lines on a map running from north to south.
II. Major lines of longitudes include; Greenwich meridian (prime meridian) 0° and International date line-180 East or West

A DIAGRAM SHOWING LONGITUDE

image 5
importance of Longitudes( Prime Meridian and International date line)
  • The prime meridian divides the world into the Eastern and western hemispheres
  • It is also used to determine international time
  • The International Date Line is used to determine day and dates.
  • The prime meridian is also called Greenwich Meridian because it passes through a town called Greenwich in London (England)
  • In Africa it passes through Accra, a City in Ghana.
  • Other countries crossed by the prime – meridian
    Include: –
    a) Algeria
    b) Mali
    c) Burkina Faso
Importance of longitudes
  • They determine how far a place is East or West of Greenwich.
  • Prime meridian is used to determine international time
  • The International Date Line is used to determine days and dates.
Importance of Latitudes
  • They determine how far a place is North or South of the equator.
  • The equator is used to determine climate of an area
  • NB: 1. Both longitudes and latitudes are used to locate places on a map.
  • 2. The method of locating places using lines of latitude and lines of longitude is Grid Reference
Calculating time
  • Time is calculated from the Greenwich meridian
  • Every 150 makes an hour, therefore 10 = 4 minutes.
  • The world is divided into 24 divisions called Time Zone and each time zone is 150 apart.
NB: A time zone is a region on the globe that experience the same standard time
  • East of the Greenwich meridian, we add time while west of the Greenwich, we subtract time.
  • East Africa’s time zone is called East African standard time (EAST)