Geo: Ch. 10 (Streams and Floods)
Terms in this set (33)
The gravel bed load of a stream moves by
sliding and rolling
Low ridges of flood-deposited sediment that form on both sides of a stream channel and thin away from the channel
The movement and interchange of water between the sea, air and land can be visualized by the
Stream that flows in a network of rivulets around numerous sandbars
A stream can increase its length by
Building a delta, meandering, headward erosion
A ridge or strip of ground separating one drainage basic from another
Certain features on the planet Mars resemble _____ on Earth.
A _____ is the body of sediment deposited at the mouth of the river when the river's velocity decreases.
A "100-year flood" has a ______ percent chance of occurring in any given year
Rivers may develop pronounced sinuous curves called a ______ pattern
A cutoff meander may become a crescent-shaped _____
A _____ is a ridge of sediment built by sedimentation on the middle or banks of a stream channel.
The ____ area is the total area drained by a river and its tributaries
A streams discharge is ______
The volume of water passing through a specific point along the stream in a unit of time
Movement of cobbles and boulders by rolling, sliding, or dragging, in a stream bed is called _____ load
The limit to downcutting of a stream is called the _____ level
A ______ drainage pattern is one in which streams diverge outward like spokes on a wheel
In North America, the ______ separates streams that flow into the Pacific Ocean from those that flow into the Atlantic Ocean and Gulf of Mexico
A river's velocity is faster ____
Along the outside of the meander loop near the cut bank
The _____ load is sediment light enough to remain lifted indefinitely above the bottom by water turbulence.
The delta of ____ River is a wave-dominated delta that resembles that Greek letter delta and the origin of the name.
_____ refers to sand grain movement in a series of of short leaps or bounces of the bottom
_____ meanders are meanders that retain the sinuous pattern as the cut vertically downward below the level at which they are originally formed
A graded stream can be depending its channel by down cutting while part of its energy is also widening its valley by _____ erosion
A ____ is a step-like landform above a stream and its floodplain. It is a remnant of an older flood-plain or a river-eroded flat surface
Flood control structures along the Mississippi River surrounding New Orleans are predominantly ______.
The process deepening of a valley by erosion is called _____.
A _____ drainage pattern of a river resembles a tree.
_____ is/are sudden localized floods of large volume and short duration, often triggered by heavy rainstorms.
____ deposits are found in streams where running water has mechanically concentrated heavy sediment such as gold.
Streams erode rock and sediment by ____.
Hydraulic action, solution, and abrasion
On large alluvial fans, the _____ sediment is deposited near the mountains.
Deltas may be river dominated, tide dominated or ______.
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