Question

Why earth is divided into different hemispheres

Answer 1

Any circle drawn around the Earth divides it into two equal halves called hemispheres. There are generally considered to be four hemispheres: Northern, Southern, Eastern, and Western. The Equator, or line of 0 degrees latitude, divides the Earth into the Northern and Southern hemispheres.

Answer 2

Hey there!!!
Actually the hemispheres of earth are two divisions of earth which are created by the imaginary line known as equator passing through the middle of earth.
Hope it helps!!