Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
5.4
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
5550
Points per Word
0.00018
Page Count
64
Points per Page
0.015625
Description
Air and water pressure affect our lives every moment of every day. Without them, we couldn't swim across a pool, drink through a straw, breathe in air, or circulate blood through our bodies.