Reading Metrics
Grade Level
Upper Grades (UG 9-12)
Book Level
7.8
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
5840
Points per Word
0.000171
Page Count
64
Points per Page
0.015625
Series
Eyewitness Science
Description
This book surveys various sources of energy and the ways in which they have been harnessed.