11
Lesson 11 of 84 · U.S. Regions
U.S. Territories
Earthquakes occur when tectonic plates shift suddenly. The Ring of Fire around the Pacific Ocean is Earth's most earthquake-prone region.
Key Facts
1
Earth has seven continents.
2
There are five major oceans.
3
Climate differs from weather.
Check Your Understanding
Question 1
1 of 2How many continents are there?