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

A DIAGRAM SHOWING LONGITUDE

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)