Lines of longitude / longitudes

Back to: PRIMARY SEVEN P7 SOCIAL STUDIES SST TOPICAL QUESTION AND ANSWERS

Lines of longitude / longitudes

Qn. What are lines of longitude?
✓ Lines of longitude are imaginary lines drawn on the major globe from North to South.
✓ They are also called Meridians.
Qn. What is longitude?
✓ Longitude is the distance of a place East or West of the Greenwich Meridian.
Qn. Name the major line of longitude.
✓ Greenwich Meridian or Prime Meridian.
Note: Greenwich Meridian is marked 0o.
Qn. Why Prime Meridian is also called Greenwich Meridian?
✓ It crosses Greenwich town in England.
Qn. Apart from Greenwich Meridian, name another important line of longitude
✓ International Date Line 180o East or West.
Qn. Give one importance of International Date Line.
✓ It determines days and dates.
Qn. Mention any two importance of lines of longitude.
✓ To tell time
✓ They help to locate places on a map.
Qn. Name the line of longitude which divides the world into Eastern and Western hemispheres.
✓ Greenwich Meridian.
Qn. Which line of longitude helps to determine time?
✓ Greenwich Meridian
Qn. Name the countries crossed by the Greenwich Meridian in Africa
✓ Ghana
✓ Mali
✓ Burkina Faso
✓ Algeria
Qn. Name the town/city crossed by the Greenwich Meridian in West Africa.
✓ Accra
Note: Algeria is crossed by both Tropic of Cancer and Greenwich Meridian.
Qn. Why lines of latitude and longitude are called imaginary?
✓ They are not physically seen.
Qn. How are latitudes similar to longitudes?
✓ Both locate places on a map
✓ Both are imaginary lines.
✓ Both are drawn on maps.
Qn. How are lines of latitude different from lines of longitude?
✓ Lines of longitude determine time unlike lines of latitude
✓ Lines of latitude determine the climate of an area unlike lines of longitude
✓ Lines of longitude meet at the North and South Poles while lines of latitude are parallel
✓ Lines of latitude measure from 0o to 90o while lines of longitude measure from 0o to 180o
✓ Lines of latitude cross from east to west while lines of longitude cross from the North Pole to the South Pole
✓ The major line of latitude is Equator while the major line of longitude is Prime Meridian/Greenwich Meridian