Channel shape and slope (gradient) largely control river velocity.Steep gradients and narrow channels increase flow speed, affecting erosion and deposition.
72.
A meander that gets cut off from the main river forms what feature?
A terminal moraine marks the furthest advance of a glacier and is composed of debris deposited at its snout.It's an important indicator of past glacial extent.
76.
Which of the following is a depositional landform created by glaciers?
An esker is a long, winding ridge formed by sediment deposition from meltwater streams flowing within or beneath a glacier.It indicates past glacial meltwater channels.
77.
Which feature results from chemical weathering of limestone?
Karst topography is formed by the chemical dissolution of limestone, producing sinkholes, caves, and underground drainage.It is common in humid regions.
Exfoliation occurs when overlying rock is removed (unloading), reducing pressure and causing layers to peel off like onion skins.Typical in granitic terrains.
79.
What is the general direction of sediment transport in a longshore current?