What is a drainage basin ?

Define tributary

- a river or stream flowing into a larger river or lake

What type of system are drainage basins?

-Drainage basins are open systems ( and a sub-system of the GWC )

Define drainage basin

-Drainage basins/river catchments are the areas of land that surround a river and provide it with water

Define source

-The source is the start of a river

Define watershed

-Watersheds divide different drainage basins acting as boundaries. e.g. The Amazon river is incrediby big and the Andes is a watershed to it

Define confluence

-the point at which a tributary and larger river meet

Define mouth

-where the river ends ; a lake or sea