Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
7.1
Points
4.0
Fiction/Nonfiction
Nonfiction
Word Count
25786
Points per Word
0.000155
Page Count
128
Points per Page
0.03125
Series
National Geographic Kids
Description
Part graphic novel, part guidebook, this rocky journey introduces readers to the basic geologic processes that shape Earth.