An important question comes to mind when a helicopter takes off straight from the ground without building up any speed or a rocket blasts through the how exactly does that work? This explorative and thrilling set helps intrepid readers to answer this question, not only about rockets and helicopters, but about cars, jet planes, powerboats, and high-speed trains as well.
Just a three for me—it was hard to summarize all the technical terms for my 3 1/2-year-old who loves airplanes. But he found it very fascinating, and I’m sure if he was a little older with a broader vocabulary—and if I was actually trying to read every single word—it would be a four at least. It does seem to be well done.