Time zones : Zones or belts of given east-west (longitudinal) extent within which standard time is applied according to a uniform system.
Earth’s grid : A network of latitudes and longitudes on the Earth’s surface to find the exact location of a place.
Axis : An imaginary line joining the North Pole and South Pole on which the Earth rotates.
Latitude : An angular distance of a point on the Earth’s surface from the centre of the Earth.
Longitude : The angular distance of a place east or west of the Prime Meridian.
Prime Meridian : The longitude of zero degree passing through Greenwich near London.
Meridians : Semi-circles connecting the north and south.
Great Circle : A circle that divides the Earth into two equal halves.
International Date Line : The Meridian of 180°.
Why do we need to locate places on Earth?
What do you mean by the latitude of a place?
What is meant by Prime Meridian?
Explain why there is no higher latitude other than 90 degrees North and South.
Explain why Lines of Longitudes are called Meridian of Longitude?



















