Physical geography

Physical geography

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Physical geography

Orographic uplift

Geography; Physical geography

Uplift of an air mass because of a topographic obstruction. Uplift also causes the cooling of the air mass. If enough cooling occurs condensation can occur and form into orographic precipitation.

Is precipitation that forms when air is forced to rise because of the physical presence of elevated land. As the parcel rises it cools as a result of adiabatic expansion at a rate of approximately ...

Orogenesis

Geography; Physical geography

The process of mountain building through tectonic forces of compression and volcanism.

Origin

Geography; Physical geography

The arbitrary starting point on a graph or grid coordinate system. Defined by the intersection of the x and y-axes. Also see false origin.

Organic soil

Geography; Physical geography

Soil order (type) of the Canadian System of Soil Classification. This soil type is common in fens and bogs. This soil is mainly composed of organic matter in various stages of decomposition.

Organic matter

Geography; Physical geography

Mass of matter that contains living organisms or non-living material derived from organisms. Sometime refers to the organic constituents of soil. Also see soil organic matter.