What are fluvial processes?
Processes performed by rivers that shape the landscape.
Name the three fluvial processes.
Erosion, transportation, deposition.
What is erosion?
The gradual destruction of land by flowing water.
What is transportation?
Movement of eroded material by a river.
What is deposition?
Dropping of transported material when the river loses energy.
What is a river profile?
A visual representation of a river’s shape.
What is a longitudinal profile?
Side view showing river gradient from source to mouth.
Where is the upper course found?
Near the river source.
Name the two types of river profiles.
Longitudinal profile and transverse profile.
What is a transverse profile?
Cross-section of a river valley from bank to bank.
Dominant process in the upper course?
Erosion (vertical erosion).
Flow type in upper course?
Turbulent.
Gradient in upper course?
Steep.
Water volume in upper course?
Low.
Gradient in middle course?
Gentle.
Dominant processes in middle course?
Both erosion and deposition.
Where is the lower course found?
Near the river mouth.
Lower Course Dominant process?
Deposition.
Lower Course Flow type?
Laminar flow.
Lower Course Water volume?
High.
What is a temporary base level?
Obstacles slowing erosion (waterfalls, rapids, dams).
What is the permanent base level?
Sea level — lowest point erosion can reach.
What are spurs?
Ridges of high land between river channels.