1 Air-Altitude, Density and Specific Volume-The density and the specific volume of air varies with elevation above sea level.  Tag Search.
What is the natural process that causes rocks to break down? Weathering from mechanical and chemical means is the process that causes rocks to become smaller and smaller; wind, rain, the sun, the freeze/thaw cycle, moving glaciers, chem â¦ ical reactions, and gravity are some of the causes of weathering.
Weathering refers to the process by which rocks are broken down into smaller pieces without substantial movement. Buttes and mesas, for example, are formed when the surface material of a hill or a mountain â called the cap rock â resists physical weathering but underlying materials (usually softer rock) do not.