Sodium chloride dissolving into soil water and ground water
This is not part of the hydrologic cycle.
water evaporating from a like? water infiltrating into soil and bedrock? sodium chloride dissolving into soil water and ground water? water moving into creeks and streams following a rainstorm?
most precipitation originates from which of the following? transpiration? sublimation? evaporation? infiltration?
evaporation and transpiration
these are components of the hydrologic cycle that release water vapor directly to the atmostphere. evaporation and infiltration? evaporation and transpiration? precipitation and runoff? discharge and transportation?
upstream tributaries tend to have higher competencies than the major river
Which of the following is true concerning a major river system? discharge decreases below junctions with perennial tributaries? upstream tributaries generally have lower gradients than the major river? channel bed roughness and erosive force generally increase downstream? upstream tributaries tend to have higher competencies than the major river?
upper basin; very heavy, sustained rainfall in the late spring and early summer
which of the following is the only correct response concerning the location and causes of the extraordinarily severe, 1993, flooding on the MS river and tributaries? lower basin; heavy rains in late spring and early summer? upper basin; rapid melting of an unusually deep snow pack in early spring? lower basin; very heavy, late summer rains associated with a severe hurricane? upper basin; very heavy, sustained rainfall in the late spring and early summer?
infiltration decreases; runoff increases
how does urbanization affect runoff and infiltration in a small, previously forested, drainage basin? both decrease? both increase? runoff decreases; infiltration increases? infiltration decreases; runoff increases?
which of the following is not a depositional feature? cut bank? point bar? alluvial fan? delta?
gold nuggets transported in a stream in CA is an example of the streams: bed load? suspended load? particle load? dissolved load?
silt and clay-sized, detrital grains
These make up the suspended loads of most rivers and streams. dissolved ions? dissolved salts? silt and clay-sized, detrital grains? sand and gravel that move during floods?
This describes the total sediment load transported by a stream. velocity? capacity? competence? discharge?
this describes the particle transport mode in streams intermediate between suspension and rolling along the bottom. the result is particle "hopping" along the bottom of a stream. alluviation? leaping? saltation? creeping?
Which of the following are most likely to be found at the head of a stream? bedrock channels? alluvial channels? meandering streams? braided streams?
on the outer parts of the meander loops or bends
where is erosion concentrated along a meandering stream? at the unconsolidated point bars? on the inner banks of the meander loops? on the outer parts of the meander loops or bends? on the straight channel segments that connect the meander loops?
the gradient is lowered as the channel lengthens and migrates away from the cut or outer banks of the loop
in the absence of cutoff, how does a river meander loop behave over time? the gradient is raised as the loop lengthens, and the channel migrates toward the cut or inner bank of the loop? the gradient is raised as the loops shortens, and the channels migrates away from the cut or outer bank of the loop? the gradient is lowered as the channel lengthens and migrates away from the cut or outer banks of the loop? the gradient is lowered as the loop shortens, and the channel migrates toward the cut or inner bank of the loop
which of the following tends to form in streams having highly variable discharge and easily erodible banks? braided streams? meandering stream? bedrock channel? alluvial fan?
rapids and lows of white water
these are characteristics of downcutting streams and a youthful stage of valley evolution due to steep gradients. wide flood plains? rapids and lows of white water? U shaped cross valley profiles? meandering channels and natural levees?
deposition upstream from the dam
A dam and reservoir are constructed on a graded river. What will happen? channel downcutting upstream and downstream from the dam? deposition upstream and downstream from the dam? deposition downstream from the dam? deposition upstream from the dam?
mostly fine sand and silt that build up during floods
which of the following statements is true concerning natural levees? depositional features formed at times of low discharge? mostly fine sand and silt that build up during floods? erosional features left behind when meander cutoff occurs? form the high, steep banks of a downcutting stream?
at the head of a delta, the major channel splits into smaller channels that follow different paths to the sea. these smaller channels are known as what? endotributaries? exotributaries? distributaries? cotributaries?
sea level falls; land rises
which of the following must result in a lower base level for rivers and streams? sea level falls; land subsides? sea level falls; land rises? sea level rises; land subsides? sea level rises; land rises?
t/f alluvial fans develop at unusual locations where stream gradients abruptly INCREASE for a short distance.
t/f with the passage of time, deposition and erosion gradually SHORTEN the channel length of a meander loop
t/f for the same discharge, gradient and channel cross section, a stream with a boulder-strewn bed would be MORE turbulent than one with a sandy bed.
t/f a stream's COMPETENCE reflects the size of the largest particle a stream can move