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.
Physical processes that break rock apart without changing its chemical makeup; can be caused by ice wedging, animals, and plant roots. Mechanical weathering Mechanical weathering process that occurs when water freezes in the cracks of rocks and expands, causes the rock to break apart.