Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
5.7
Points
0.5
Fiction/Nonfiction
Nonfiction
Word Count
2912
Points per Word
0.000172
Page Count
48
Points per Page
0.010417
Series
True Book: Extreme Earth
Description
Learn about sinkholes, from how they are formed to how they can affect people around the world.