SOLVED

21) What is the drop in water surface elevation divided by the distance the water flows? A) stream discharge B) hydraulic capacity C) hydrologic resistance D) stream gradient 22) The ________ river has the largest discharge of any in the world. A) Nile B) Mississippi C) Congo D) Amazon 23) Which one of the following does not apply to stream turbulence and average velocity? A) channel shape; bed roughness B) laminar flow; dissolved load C) discharge; stream gradient D) stream gradient; channel roughness 24) Which one of the following is true concerning a major river system? A) Upstream tributaries generally have lower gradients than the major river. B) Channel bed roughness and turbulence generally increase downstream. C) Upstream tributaries generally have higher competencies than the major river. D) Discharge decreases below junctions with perennial tributaries. 25) ________ generally constitutes the highest percentage of the annual sediment load moved by a stream. A) Bed load B) Dissolved load C) Suspended load D) Saltation load 26) Where is erosion concentrated along a meandering stream? A) on the straight channel segments that connect the meander loops B) on the outer parts of the meander loops or bends C) at the unconsolidated point bars D) on the inner banks of the meander loops 27) Which one of the following would cause stream rejuvenation? A) Sea level rises. B) A shift from downcutting to lateral cutting occurs. C) The land is uplifted. D) Unstable distributaries in a delta are abandoned. 28) Which one of the following statements is true concerning natural levees? A) They are depositional features formed at times of low discharge. B) They are mostly fine sand and silt that build up during floods. C) They are erosional features left behind when meander cutoff occurs. D) They form the high, steep banks of a downcutting stream. 29) In a ________ drainage pattern that is generally developed in areas underlain by tilted or folded strata, tributary streams flow along outcrop areas of the softer strata. A) trellis B) dendritic C) coparallel D) radial 30) A ________ drainage pattern is common in the Appalachian Valley and Ridge Province. A) dendritic B) polygonal C) circular D) trellis