20 Questions
What are the two types of alluvial channels?
Meandering channel and braided channel
What is a meandering channel?
A channel that follows a winding course
What causes erosion on the outer bend of a meandering channel?
Faster moving water
What is a cut bank?
A small cliff on the outer bank of the channel caused by erosion
What is a point bar?
A collection of sediment materials along the inner curve of the channel caused by deposition
What is a meander cutoff?
Two bends joined by a new channel
What is an oxbow lake?
A free-standing and crescent-shaped body of water formed from a meander cutoff
What is a braided channel?
A network of small, interwoven channels separated by bars of deposited sediment
Where are braided channels commonly found?
In areas with big fluctuations in water flow, such as the arctic and mountainous regions
What are the banks of alluvial channels made up of?
Loose sediments known as alluvium
What are alluvial channels made of?
Alluvial channels are made of loose sediments, or alluvium.
What causes erosion in alluvial channels?
Fast-moving water causes erosion in alluvial channels.
What is the process called when sediments settle in a slow-moving stream?
The process is called deposition.
How do alluvial channels change their shape over time?
Alluvial channels change their shape over time through erosion and deposition.
What is the term for the process of wearing away of sediment chunks from the banks of a channel?
The process is called erosion.
What are the two types of alluvial channels?
The two types of alluvial channels are meandering channels and braided channels.
What is the main characteristic of meandering channels?
Meandering channels have a single, sinuous channel that twists and turns.
What is the main characteristic of braided channels?
Braided channels have multiple interconnected channels that divide and rejoin.
What is the main factor that determines whether a stream will meander or braid?
The main factor is the amount of sediment load in the stream.
How do alluvial channels adjust and shift?
Alluvial channels adjust and shift by the process of erosion and deposition.
Test your knowledge on alluvial channels and their characteristics in this informative quiz. Learn about the two types of alluvial channels and discover how they are formed. Find out if you have what it takes to navigate through the intricacies of these fascinating geological features.
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