Question

why are latitudes and longitudes are drawn on the globe

Answer 1

The latitudes and longitude together form a grid system by intersecting one another.

This grid system tells us where a place is located. Let me tell you how -
If we know the latitude and longitude of a place (Suppose 80° longitude and 20° latitude). So we will search the globe for where these two lines are intersecting. The point of intersection will be the location of the place.

Answer 2

latitudes and longitudes are drawn on the globe in order to understand the time zone , climate etc

different countries have different time zones lattitudes help in deciding the time zone

longitudes are used to understand climate example in equator it is hot , in frigid zone it is cold