A significant part of aeronautical science is a branch of dynamics called aerodynamics, which deals with the motion of air and the way that it interacts with objects in motion, such as an aircraft.
When you pour a liquid from one container to another, the liquid takes the shape of the container. The volume of the liquid is the same. The properties that solids and liquids share are that they both have definite volume.
All solids show the following characteristics-. (i) Solids are rigid, and incompressible. (ii) Solids have fixed shape and definite volume. (iii) Solids have their melting and boiling points above room temperature. All liquids show the following characteristics: (i) Liquids are almost incompressible but less incompressible than solids. (ii) Liquids have fixed volume but no fixed shape.