Physical weathering caused by the action of freezing water

Frost action involves the ~weathering~ processes caused by repeated cycles of freezing and thawing.

Explanation:

Physical weathering is caused by the effects of changing temperature on rocks, causing the rock to break apart. The process is sometimes assisted by water. Freeze-thaw occurs when water continually seeps into cracks, freezes and expands, eventually breaking the rock apart.

Explanation:

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.

metric time was an attempt to create a standard unit of time based off of 10, but it never took off an is not included in the metric system (si)