Reading Metrics
Grade Level
Upper Grades (UG 9-12)
Book Level
9.8
Points
4.0
Fiction/Nonfiction
Nonfiction
Word Count
18142
Points per Word
0.00022
Page Count
144
Points per Page
0.027778
Description
Questions and answers explore the shape and structure of the Earth, continental drift, and plate tectonics, earthquakes, volcanoes, oceans, and other aspects of our world.