24
Lesson 24 of 84 · Maps and Geography
How Cartographers Make Maps
Ocean floor maps reveal underwater mountains, trenches, and volcanic ridges. The Mariana Trench, the deepest point on Earth, is nearly 36,000 feet below the Pacific surface.
Key Facts
1
Latitude and longitude form a grid.
2
A legend explains map symbols.
3
The equator divides Earth into hemispheres.
Check Your Understanding
Question 1
1 of 2What do latitude lines measure?