Exam 16: Streams and Floods

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

A stream's discharge is __.

The interrelationship of the hydrosphere,geosphere,biosphere,and atmosphere is visualized through the hydrogeologic cycle.

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

Paved areas and storm sewers decrease the rate of surface runoff of water.

The discharge of a stream is the volume of water that passes a given point in unit of time (for example,50 cubic meters per second).

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

A river's velocity is faster ____.

Stream erosion and deposition are controlled primarily by a river's velocity.

Braided streams flow in a network of interconnected rivulets around numerous bars.

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

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

Rivers may develop pronounced sinuous (wiggly)curves called a ___ pattern.

A stream reaches it maximum velocity close to the shoreline.

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

The delta of the ______ River is a wave-dominated delta that resembles the Greek letter delta and is the origin of the name.

A cutoff meander may become a crescent-shaped __.

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

Drainage basins are bowl-shaped depressions with a lake in the middle,and all streams in the basin discharge their water and sediment into that lake.

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