Chapter 11 Flashcards
Streams & Floods (20 cards)
Which is the largest reservoir of fresh water on earth?
Glaciers
What is the lowest possible elvel a stream can erode?
Base Level
The process of evapotranspiration is associated with __.
plants
What is the stream gradient in m/km between two points along a river separated by a horizontal distance of 2 km and with elevation of 500 m for the one upstream and 250 m for the one downstream?
125 m/km
A drainage pattern developed on a zone of fault is known as
rectangular
A cut bank is the part of the river where water velocity is__.
fastest
Point bars are depositional features found at__.
meander streams
What particle size is more prone to be transported by suspension?
Clay
Bed load transport by a river or stream is associated to the process of
Saltation
What is an oxbow lake?
It is a lake formed as a cutoff from a meander migrating stream.
Identify the stream can develop when there is a very high sediment supply.
Braided
Streams that are more mature are expected to have__.
higher water discharge
A 100-year floodplain means that zone will flood__.
with a 1% chance in any given year
A 0.2% probability a zone will flood at any given year correspond to a __ floodplain.
500-year
A natural levee has sediment that become finer away from the stream.
TRUE
One example of flood mitigation is__.
channelization
Groundwater is not part of the hydrological cycle
FALSE
The hydrological cycle relates the interaction between __.
the Hydrosphere, Atmosphere, Lithosphere and Biosphere
A drainage pattern developed on a uniform lithology is known as __.
dendritic
A drainage basin areal extension is proportional to the number of tributaries.
TRUE
