What is the longest parallel line called ?

The lines of longitudes are called :

Which line of longitude is the Prime Meridian ?

The semi circles that joins the North pole and run from North to South are called :

The portion of the Earth that lies to the north of the equator is called :

The longitude of a place is measured East or West of the :

Which is the part of Earth that lies south of the equator ?

The point at the top of earth's surface is called :

The poles can be used as how many fixed points ?

Curves of constant latitudes on the Earth are referred to as :