Term
| The gravel bed load of a stream moves by _____. |
|
Definition
|
|
Term
| A(n) __ is the body of sediment deposited at the mouth of a river when the river's velocity decreases. |
|
Definition
|
|
Term
| Floods are described by ____, the average time between floods of a given size. |
|
Definition
|
|
Term
| A(n) ____ stream is one that exhibits a delicate balance between its transporting capacity and the sediment load available to it. |
|
Definition
|
|
Term
| A "100-year flood" has a _______ percent chance of occurring in any given year. |
|
Definition
|
|
Term
| The ______ is the total area drained by a river and its tributaries. |
|
Definition
|
|
Term
| 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. |
|
Definition
|
|
Term
| A ridge or strip of ground separating one drainage basin from another is termed a ____. |
|
Definition
|
|
Term
| A river's velocity is faster ____. |
|
Definition
| along the outside of a meander loop near the cut bank |
|
|
Term
| A cutoff meander may become a crescent-shaped __. |
|
Definition
|
|
Term
| Streams erode rock and sediment by ___. |
|
Definition
|
|
Term
| The movement and interchange of water between the sea, air and land can be visualized by the ____. |
|
Definition
|
|
Term
| Discharge is the product of average stream width times average stream depth times ___. |
|
Definition
|
|
Term
| The limit to downcutting of a stream is called the ___ level. |
|
Definition
|
|
Term
| A _____ is a ridge of sediment built by sedimentation on the middle or banks of a stream channel. |
|
Definition
|
|
Term
| Rivers may develop pronounced sinuous curves called a ___ pattern. |
|
Definition
|
|
Term
| The process of deepening of a valley by erosion of a streambed is called __. |
|
Definition
|
|
Term
| ________ are low ridges of flood-deposited sediment that form on both sides of a stream channel and thin away from the channel. |
|
Definition
|
|
Term
| Movement of cobbles and boulders by rolling, sliding, or dragging in a streambed is called ____ load. |
|
Definition
|
|
Term
| _____ meanders are meanders that retain their sinuous pattern as they cut vertically downward below the level at which they originally formed. |
|
Definition
|
|
Term
| _____ refers to sand grain movement in a series of short leaps or bounces off the bottom |
|
Definition
|
|
Term
| A stream can increase its length by _____. |
|
Definition
|
|
Term
| A stream's discharge is __. |
|
Definition
| the volume of water passing through a specific point along the stream in a unit of time. |
|
|
Term
| A ____ drainage pattern is one in which streams diverge outward likes spokes on a wheel. |
|
Definition
|
|
Term
| _____ are low ridges of flood deposited sediment that form on either side of a stream channel and thin away from the channel. |
|
Definition
|
|
Term
| In North America, the ___ separates streams that flow into the Pacific Ocean from those that flow into the Atlantic Ocean and Gulf of Mexico. |
|
Definition
|
|
Term
| ___ is/are sudden localized floods of large volume and short duration, often triggered by heavy rainstorms. |
|
Definition
|
|
Term
| A(n) ___ stream flows in a network of rivulets (subchannels) around numerous sandbars. |
|
Definition
|
|
Term
| The ______ load is sediment light enough to remain lifted indefinitely above the bottom by water turbulence. |
|
Definition
|
|
Term
| Flood control structures along the Mississippi River surrounding New Orleans are predominantly _____. |
|
Definition
|
|
Term
| On large alluvial fans, the _____ sediment is deposited near the mountains. |
|
Definition
|
|
Term
| A graded stream can be deepening its channel by down cutting while part of its energy is also widening its valley by ______ erosion. |
|
Definition
|
|
Term
| A(n) ___ drainage pattern of a river resembles a tree. |
|
Definition
|
|
Term
| ___ influences the velocity of a river along with gradient. |
|
Definition
| channel shape and roughness |
|
|
