Physical geography

Physical geography

Industry: Geography

Add a new term

Contributors in Physical geography

Become a Contributors

Physical geography

vicious circle

Geography; Physical geography

A downward spiral of negative feedback where a trigger event starts a sequence of effects which continue to make the situation worse.

estimator

Geography; Physical geography

An estimator is any value calculated from the sample data For example, the sample mean is an estimator of the population mean.

Lit. Sheep-like rock. Where a more resistant rock is passed over by a glacier the rock around it is removed more quickly leaving it protruding from the valley floor. The upglacier side is smoothed by ...

intrusive landform

Geography; Physical geography

One produced by the cooling of magma into solid igneous rock within the crust.

overgrazing

Geography; Physical geography

Removal of vegetation cover from an area by grazing animals at a rate that exceeds the ability of the land to replace that vegetation.

winter solstice

Geography; Physical geography

The winter solstice denotes the first day of the winter season. For the Northern Hemisphere, the date of winter solstice is either on December 21 or 22 (changes yearly). June 21 or 22 is the date of ...

explosive eruption

Geography; Physical geography

Volcanic eruption where high-viscosity granite-rich magma causes an explosion of ash and pyroclastic material. This type of eruption is common to composite and caldera volcanoes.