Techniques

Question 1

Graticule

Answer 1

All global maps are overlaid by an imaginary grid called the graticule, what GPS systems are based on

Question 2

When to talk about hemispheres

Answer 2

Describing global patterns

Question 3

What is a hemisphere

Answer 3

Half of a world
Equator (latitude) splits into north and south
Prime meridian (longitude) splits into eastern and western