This document discusses different phases of matter - solid, liquid, and semi-solid - and methods for transporting each phase. It describes the properties of solids as being firm and stable in shape, and liquids as being nearly incompressible fluids. The document then focuses on liquid transportation, discussing vortex flow which involves liquid in rotational motion that can be forced or free based on external forces, and provides equations to calculate rotational velocity. It also addresses calculating how much water is needed to safely fill and transport oil tanks.