Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
7.5
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
7511
Points per Word
0.000133
Page Count
64
Points per Page
0.015625
Series
See and Explore Library
Description
Explanations of how mountains are formed, why oceans expand, and how continents shift.