Alluvial Channels Quiz

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Questions and Answers

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?

<p>A small cliff on the outer bank of the channel caused by erosion</p> Signup and view all the answers

What is a point bar?

<p>A collection of sediment materials along the inner curve of the channel caused by deposition</p> Signup and view all the answers

What is a meander cutoff?

<p>Two bends joined by a new channel</p> Signup and view all the answers

What is an oxbow lake?

<p>A free-standing and crescent-shaped body of water formed from a meander cutoff</p> Signup and view all the answers

What is a braided channel?

<p>A network of small, interwoven channels separated by bars of deposited sediment</p> Signup and view all the answers

Where are braided channels commonly found?

<p>In areas with big fluctuations in water flow, such as the arctic and mountainous regions</p> Signup and view all the answers

What are the banks of alluvial channels made up of?

<p>Loose sediments known as alluvium</p> Signup and view all the answers

What are alluvial channels made of?

<p>Alluvial channels are made of loose sediments, or alluvium.</p> Signup and view all the answers

What causes erosion in alluvial channels?

<p>Fast-moving water causes erosion in alluvial channels.</p> Signup and view all the answers

What is the process called when sediments settle in a slow-moving stream?

<p>The process is called deposition.</p> Signup and view all the answers

How do alluvial channels change their shape over time?

<p>Alluvial channels change their shape over time through erosion and deposition.</p> Signup and view all the answers

What is the term for the process of wearing away of sediment chunks from the banks of a channel?

<p>The process is called erosion.</p> Signup and view all the answers

What are the two types of alluvial channels?

<p>The two types of alluvial channels are meandering channels and braided channels.</p> Signup and view all the answers

What is the main characteristic of meandering channels?

<p>Meandering channels have a single, sinuous channel that twists and turns.</p> Signup and view all the answers

What is the main characteristic of braided channels?

<p>Braided channels have multiple interconnected channels that divide and rejoin.</p> Signup and view all the answers

What is the main factor that determines whether a stream will meander or braid?

<p>The main factor is the amount of sediment load in the stream.</p> Signup and view all the answers

How do alluvial channels adjust and shift?

<p>Alluvial channels adjust and shift by the process of erosion and deposition.</p> Signup and view all the answers

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