Higher Hydrosphere Drainage Basins[Date] Today I will: - Know what a drainage basin is - Be able to explain it in terms of inputs, processes or outputs

Higher Hydrosphere A drainage basin is part of the hydrological cycle and may be viewed as an individual system with inputs, storage and outputs.

Sea/Ocean

Main Channel Another Drainage Basin

Sea/Ocean The Source of the river is where it starts

Sea/Ocean A tributary is a stream or smaller river that flows into a larger one

Sea/Ocean A confluence is where a small river joins a larger one

Sea/Ocean A watershed is a boundary of a drainage basin

Sea/Ocean The catchment area is the area from where water flows into the river

Sea/Ocean A mouth is the end of a river

Higher Hydrosphere 1.Read ‘The Drainage Basin as an Open System’ on pages 47 and 48 2.Answer questions 4 and 5 on page 64

Higher Hydrosphere Q: Describe the movement of water in a drainage basin Each drainage basin is a system with inputs, outputs, stores and transfers. Inputs are where water enters the system through precipitation (rain or snow). Stores are places where water is held e.g. in pools and lakes on the surface or in soil and rocks in the ground. Transfers are processes by which water flows or moves through the system e.g. infiltration, surface runoff and through flow. Outputs are where water is lost to the system either by rivers carrying it to the sea or direct to the atmosphere through water lost by evaporation or transpired by plants.