If you go outside on a windy day, you realize just how strong air can be. It can lift a kite high in the sky and grab onto a balloon and carry it away. But even when the air is calm, you can feel its strength and resistance when you move. "How Do Aircraft Fly?" reveals the science behind air pressure and flying everything from hot-air balloons to helicopters to jet aircraft through eye-catching full-color photograph and illustrations, as well as through textual explanations of real-world examples....

When you step into a full bathtub, you learn a lot about displacement of water. As your body sinks into the tub, the water moves out of the way. But water is also pushing up on you as you enter into it. "Why Do Ships Float?" reveals the science behind buoyancy and why objects float, even if they are large cruise or military vessels. Colorful photographs and illustrations will enthrall young readers on this voyage through science....

Invites young artists to look at lines. This title helps readers learn that there are many different kinds of lines-straight, curved, zigzag, thick, thin, vertical, horizontal, and more. It features the work of well-known artists to show readers different ways line is used in works of art....