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.
What is it called when a solid changes state directly to a gas? When a solid changes physical state directly to a gas, we call this change sublimation. Solid carbon dioxide (dry ice) will sublimate directly into a gas (carbon dioxide). Tâ¦o learn more about sublimation, use the link below. solid->gas = sublimation    gas->liquid = condensation    gas->solid = deposition Sublimation is when a solid turns into a gas, without becoming a form of liquid first.