Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
8.0
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
5627
Points per Word
0.000178
Page Count
64
Points per Page
0.015625
Series
Watts Library
Description
Rocks, gems, and minerals are the basic things of which Earth is made. This book explores how heat, pressure, water, wind, and time combine to make these common, precious, and essential substances.