Physical geography

Physical geography

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Physical geography

Valley wall

Geography; Physical geography

The side slope of a stream or glacial valley.

Valley

Geography; Physical geography

A linear depression in the landscape that slopes down to a stream, lake or the ocean. Formed by water and/or ice erosion.

Urbanisation

Geography; Physical geography

Urbanisation is the physical growth of urban areas as a result of global change. urbanisation is also defined by the United Nations as movement of people from rural to urban areas with population ...

Vacuum

Geography; Physical geography

(1) Space devoid of atoms or molecules. (2) Emptying of air.

Urban heat island

Geography; Physical geography

Observed condition that urban areas tend to be warmer than surrounding rural areas.

Warm desert

Geography; Physical geography

Desert found in the subtropics or interiors of continents at the middle latitudes where precipitation is low and surface air temperatures are high.

(1) Coarse alluvial sediments. (2) The downslope movement of small particles of soil by overland flow. Also called sheetwash. (3) A term used in the United States for a shallow intermittent stream ...