A Why Doesn't the Moon Fall Down? And Other Questions about Forces

A fun, quirky science series that tackles the questions other books are afraid to ask!
Why doesn't the Moon fall down? How can a plane fly upside down? And just why aren't there any super-giant humans? A Question of Science: Forces answers all these questions and much more.
With an engaging question and answer format, these books draw kids into science in a fun way. Each bo