noun. This mountain is a landform. This mountain is a landform. The definition of a landform is a natural physical feature on the earth's surface.A mountain or a valley is an example of a landform. any topographic feature on the earth's surface, as a plain, valley, hill, etc., caused by erosion, sedimentation, or movement. noun.oun. This mountain is a landform. This mountain is a landform. The definition of a landform is a natural physical feature on the earth's surface.
Report Abuse. Titanium is a solid at normal conditions (a metal). It is not found in nature as a pure element rather in its oxide form rutile, principally in commercial concentrations in beach sands along the coast of Queensland.
Titanium readily reacts with oxygen at 1,200 Â°C (2,190 Â°F) in air, and at 610 Â°C (1,130 Â°F) in pure oxygen, forming titanium dioxide. It is, however, slow to react with water and air at ambient temperatures because it forms a passive oxide coating that protects the bulk metal from further oxidation.