Our books are free to read online. If you enjoy them, printed editions are available for people who want a book to keep.
Oak the Orca Thinks About Gravity
What keeps an orca in the ocean—and what keeps you on the ground?
Oak the Orca starts wondering about gravity, buoyancy, astronauts, humans, and what it might be like to float without an ocean.
By Robert Savinelli and Joseph Tu, MD
Digital edition: Free
Help make this book better
Buoyancy Books is collaborative. Have an idea, scientific correction, illustration suggestion, or another way to improve this book? We’d like to hear it.