Geology 3 Ch. 10

34 terms by Dre26

Create a new folder

Advertisement Upgrade to remove ads

Saltation

____ refers to sand grain movement in a series of short leaps or bounces off the bottom

Continental divide

In North America, the ___ separates streams that flow into the Pacific Ocean from those that flow into the Atlantic Ocean and Gulf of Mexico.

Graded

A(n) ____ stream is one that exhibits a delicate balance between its transporting capacity and the sediment load available to it

1

A "100-year flood" has a _______ percent chance of occurring in any given year

Base

The limit to downcutting of a stream is called the ___ level

Incised

____ meanders are meanders that retain their sinuous pattern as they cut vertically downward below the level at which they originally formed

Stream terrace

A(n) ___ is a step-like landform found above a stream and its floodplain. It is a remnant of an older flood plain or river-eroded flat surface

Traction

Movement of cobbles and boulders by rolling, sliding, or dragging in a streambed is called ____ load.

Down cutting

The process of deepening of a valley by erosion of a streambed is called __

Coarsest

On large alluvial fans, the _____ sediment is deposited near the mountains

Natural levees

_____ are low ridges of flood-deposited sediment that form on both sides of a stream channel and thin away from the channel

Recurrence interval

Floods are described by ____, the average time between floods of a given size

Oxbow lake

A cutoff meander may become a crescent-shaped __

Lateral

A graded stream can be deepening its channel by down cutting while part of its energy is also widening its valley by ______ erosion

Artificial levees

Flood control structures along the Mississippi River surrounding New Orleans are predominantly ____

bar

A _____ is a ridge of sediment built by sedimentation on the middle or banks of a stream channel

All of above

Streams erode rock and sediment by ___

Channel shape & roughness

___ influences the velocity of a river along with gradient

Braided

A(n) ___ stream flows in a network of rivulets (subchannels) around numerous sandbars

Dendritic

A(n) ___ drainage pattern of a river resembles a tree.

Suspension

The ______ load is sediment light enough to remain lifted indefinitely above the bottom by water turbulence

Radial

A ____ drainage pattern is one in which streams diverge outward likes spokes on a wheel

Flash floods

___ is/are sudden localized floods of large volume and short duration, often triggered by heavy rainstorms

Delta

A(n) __ is the body of sediment deposited at the mouth of a river when the river's velocity decreases

All of above

A stream can increase its length by ____

stream's discharge

A ___ is the volume of water passing through a specific point along the stream in a unit of time.

Meandering

Rivers may develop pronounced sinuous curves called a ___ pattern

Natural levees

_____ are low ridges of flood deposited sediment that form on either side of a stream channel and thin away from the channel

Drainage basin

The ______ is the total area drained by a river and its tributaries

Sliding & rolling

The gravel bed load of a stream moves by ___

Stream velocity

Discharge is the product of average stream width times average stream depth times ___

faster

A river's velocity is ___ along the outside of a meander loop near the cut bank

Divide

A ridge or strip of ground separating one drainage basin from another is termed a ___

Hydrologic cycle

The movement and interchange of water between the sea, air and land can be visualized by the ____

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set