Which is the definition of a river's upper course?
The area closest to the mouth
The area closest to the source
Which is the definition of a river's lower course?
The of the changes along the river. The shape depends on which is the process - erosion or .
The cross profile shows the gradient of the river over different courses.
The cross profile is the cross section of the river and shows the shape of the valley and the channels as the river changes over the courses.
deepens the river valley and channel, making it v-shaped.
Vertical erosion is dominant in the lower course.
❌ erosion ❌ the river valley and channel.
A dominant process is one that has the most impact.
Define 'river course'.
The path of a river as it flows downstream
The gradient of a river as it flows downstream
