Eq4 And Eq5 Flashcards
What is discharge?
Discharge is the amount of water in the river.
What is vertical erosion?
Vertical erosion is when there is more gravitational pull
In what part of a rivers course is there the most discharge?
In the upper course
In what part of the rivers course is the discharge the highest?
In the lower course
How are valley sides broken down?
By weathering, including freeze thaw and biological both being present.
Where are steep sided and narrow v shaped valleys created typically?
In upland rivers.
How are waterfalls formed?
When a layer of more resistant rock( hard rock) is on a layer of less resistant rock( soft rock), the soft rock erodes at a faster rate, by abrasion. Water spins around at the bottom, and creates a plunge pool. As the hard rock overhangs, it eventually breaks and erodes the soft rock back even more, as a result a water fall is formed, eroding upstream forming a steep sided valley called a gorge.
What is hydraulic action?
water hitting the river bed and wearing it away.
What is attrition?
Material rubbed against the bed wearing them away.
What is solution?
Acidic water that can dissolve rock.
What is attrition?
Sediment hitting each other and breaking it down further.
Example of physical of weathering
Freeze thaw
Example of chemical weathering
Acid rain
Example of biological weathering
Vegitation
List the parts of a drainage basin, ( there are 5)
Source Watershed Mouth Confluence Tributary
