4 A Explain : Latitudes and a draw cricle
and show the Lobited eds
on it.
Answers
Answer:The Earth is an Oblate Spheroid. Therefore it is difficult to locate places on it unless a mathematical system is used. There are two reference points on the Earth- the North Pole and South Pole. With the help of these two points it has been possible to draw the Equator, as it lies exactly midway between the poles. In order to locate places accurately, a network of lines are drawn o the globe. The horizontal lines are the lines of latitudes and the vertical ones are the lines of longitudes. These lines intersect each other at right angles and create a network called a grid or graticule. The graticule helps us to locate places on the surface of the Earth accurately.
Latitudes
Our earth spins continuously on an imaginary axis which passes through the Centre of the earth. Northern tip of the axis is North Pole and the Southern tip of the axis is South Pole. A largest possible circle that can be drawn on a globe is Equator. It divides the globe into two equal halves. The northern half is known as Northern hemisphere and the southern half is Southern hemisphere. Since the distance from the equator to either of the poles is 1/4th of a circle round the earth, it will measure ¼ of 3600 i.e.900. Thus 900 North latitude marks the North Pole and the 900 South latitude marks the South Pole.