Rivers Geography IGCSE

What is a watershed?

• When the river is divided and separated into different river flows

• Higher ridge of land, the boundary between one drainage basin and another

• Surface runoff

• The precipitation that is collected and stored by vegetation

What is a rivers source?

• A watershed

• Water that enters a drainage basin system

• The place where a river starts

• A store

What is a rivers mouth?

• the point where the river comes to the end, usually when entering a sea

• Where the river separates into three.

• A supply of water

• An aquifer

What is a tributary?

• A process of the hydrological cycle

• A part of streamflow that has infiltrated the ground

• A freshwater stream that feeds into a larger stream, river or other body of water.

• When the river is divided and separated into different river flows.

What happens at the confluence of a river?

• Two rivers or streams join together

• Downhill movement of water in rivers.

• The river floods

• The water is lost from the drainage basin system

What is defined by drainage basin system?

• Circulation of water over the land or under the grounds

• When the water of a river gets polluted

• The place where a river system will have numerous sources.

• The area of land that is drained by a river and its tributaries.

What is an overland flow (surface runoff)?

• A huge amount of water in a specific area

• The water that stays in the soil

• The movement of water over the land, downslope toward a surface water body.

• Water that infiltrates into the soil

Channel flow referrs to...

• An area where the hydrological systems occur

• The movement of water into the soil

• A downhill movement of water in rivers

• A part of steamflow that has infiltrated in the ground

What is the groundwater?

• Water from rain

• The precipitation that is collected and stored by vegetation

• The upper layer of water stored underground

• The water found in the cracks and spaces in soil, sand and rock

What is Groundwater flow?

• Continual circulation, this means that there is a definite amount of water in the system and that this amount does not change

• When water is able to move slowly through the soil and porous rocks to move back towards the sea

• Higher ridge of land, the boundary between one drainage basin and another

• When the river is divided and separated into different river flows