Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
5.5
Points
0.5
Fiction/Nonfiction
Nonfiction
Word Count
2687
Points per Word
0.000186
Page Count
48
Points per Page
0.010417
Description
Photographs and text introduce scientific concepts related to gravity, explaining what gravity is and what it affects and describing human understanding of gravity throughout history.