Edexcel GCSE Geography A key terms

The movement of people back into central urban areas, often associated with regeneration and new housing.

A desalination process in which pressure forces water through a filtering membrane that separates it from dissolved salts.

A long, narrow lake occupying a glacially eroded basin within a valley.

The upward section of the discharge line as river discharge increases.

A steep riverbank formed by erosion on the outside of a meander.

The volume of water passing a point in a river each second, usually measured in cubic metres per second.

The wearing away and removal of rock or sediment by moving water and its load.

The material carried by a river, including sediment and dissolved substances.

The speed at which river water flows, usually measured in metres per second (m/s) in fieldwork.

A bedrock outcrop shaped by glacial erosion, with a smooth, gently sloping upstream side and a steep, rough downstream side.

How well a rock withstands weathering and erosion.

The degree to which a sediment particle has smooth, curved edges rather than sharp corners.

A village, hamlet or other small settlement in the countryside.

The movement of people from the countryside to towns and cities to live.

The movement of people from the countryside to towns and cities to live.

A rating from Category 1 to Category 5 based only on a hurricane’s maximum sustained wind speed.

Water containing a high concentration of dissolved salts, such as seawater.

River transportation in which particles, such as pebbles, move in short hops or bounces along the river bed.

A coastal wetland regularly flooded by seawater, with salt-tolerant vegetation that can reduce wave energy.

A smaller group of people, places or observation times selected to represent a larger group.

Selecting a manageable number of sites or observations to represent a larger area or group.

The principle that conservation takes priority where the statutory National Park purposes are in irreconcilable conflict.

The systems and services used to collect and safely dispose of human waste and wastewater.

An image of the Earth's surface recorded by a sensor on a satellite.

Tropical grassland dominated by grasses with scattered trees and a distinct dry season.

An accumulation of loose rock fragments on a slope, often below an exposed rock face.

Information already collected by another person or organisation, which can be used in an investigation.