Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
6.1
Points
0.5
Fiction/Nonfiction
Nonfiction
Word Count
2798
Points per Word
0.000179
Description
Without Earth's magnetic field, it would be impossible for us to live. So what creates Earth's magnetism--this amazing force of nature to which we owe our lives? Purple Level V