Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
5.4
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
3919
Points per Word
0.000255
Page Count
32
Points per Page
0.03125
Series
Unbelievable
Description
This book uncovers the mysteries behind 12 of the most incredible human discoveries. Find out why massive earthquakes can shorten the length of a day and how the universe was created. Discover what's lurking at the center of the galaxy and in our oceans.