chapter - Review:
- It is quite difficult to describe the location of a place on a spherical structure like the earth. For this purpose, certain poibnts and lines are needed for reference.
- There is a needle which are throught two points on the globe. it s fixed throught two points on the globe. It is fixed throught the globe in a tilted manner. The two points throught which the needle passes are two poles - the north pole and the south pole.
- This needle is known as the exis. The axis of the earth is an imaginary point.
- The globe can be rotated on this point just like the earth retates on its axis from west to east.
- The Equator is an imaginary circular line which passes throught the center of the earth cncircling it and dividing it into two equal halves - the northern hemisphere and the southern hemisphere.
- Parallel circles from the equator up to the poles parallel to the equator are called latitudes. They are measured in degrees.
- The equator is the zero - degree latitude. The distance of each pole from the equator is one - fourth of the earth's circumference. Hence, the distance between the equator will measure 90 degrees.
- Latitude parallel to the equator on the northern side are called the northern latitude and the latitude in the southern hemisphere is called the southern latitudes.
- Tropic of cancer issituated at 231/2 degree North in the Northern Hemisphere.
- The tropic of Capricorn is situated at 231/2 degree south in the southern Hemisphere.
- Arctic Circle situated at 661/2 degrees North in the northern Hemisphere.
- Antarctic circle situated at 661/2 degrees South in the Southern Hemisphere.
