Since ancient times, humans have been fascinated with flight. As air moves over the upper surface of the wing it has further to travel, and therefore flows faster than air passing underneath. Because pressure falls as speed rises, air pressure above the wing is reduced and air pressure below is increased. This pressure difference gives rise to lift. The amount of lift created depends on the speed of flight and the shape of the wing.
Aquatic animals moving through water are also subject to the principles of aerodynamics.
An animal's body shape reveals whether it's a fast or slow swimmer. Fast swimming sharks and whales have a streamlined build, wing-shaped pectoral fins or flippers, a dorsal fin for stability, and a strong caudal fin or flukes for propulsion. Aerodynamic principles are also applied in Olympic events such as the javelin throw. Divide class into teams of three. Have each team draw a design of how they will create their javelin.