'I can' checklist for Hydrosphere:

• EXPLAIN the global hydrological cycle

• EXPLAIN the movement of water in a drainage basin

• DESCRIBE storm hydrographs and ACCOUNT FOR variations in their shape in different catchments

• EXPLAIN the processes of erosion: Hydraulic action; Abrasion; Solution; Attrition

• EXPLAIN the formation of the following river features: V-shaped valley; Waterfall; Meander; Ox-bow lake