Chapter 14

Question 1

Internal Drainage Basin

Answer 1

Water leaves the basin through
evaporation, transpiration or
subsurface gravitational flow

Question 1

Gradient

Answer 1

drop in elevation per unit distance

Question 2

Stage

Answer 2

height of river

Question 2

Base level

Answer 2

level below which a stream cannot erode its valley;
In general, the ultimate base level is sea level

Question 3

Discharge

Answer 3

Volume of flow over time

Question 4

Urbanization

Answer 4

can increase peak flow and shorten lag time between storm peak and stream discharge peak

Question 5

Exotic streams

Answer 5

Discharge of most streams increase downstream because the area being drained increases

Question 6

Hydrograph

Answer 6

A graph of stream discharge over time for a specific place

Question 7

This material is then transported to new locations ____________, where it is laid down in the process of _________

Answer 7

Fluvial transport
Deposition

Question 8

Erosion, transport, and deposition are affected by

Answer 8

discharge and
channel gradient

Question 9

(Three types of load in streams)
Dissolved load (solution)

Answer 9

Chemical solution

Question 10

(Three types of load in streams)
Suspended load

Answer 10

fine-grained particles

Question 11

(Three types of load in streams)
Bed load

Answer 11

coarser materials

Question 12

Braided Channels/Streams

Answer 12

 Multiple-thread channels
 Excess sediment
 Channels and islands are not
static
 Maze of interconnected
channels

Question 13

Straight

Answer 13

areas where gradient is high

Question 14

Meandering

Answer 14

lower-gradient areas with finer sediments

Question 15

Anabranching Channels/Streams

Answer 15

 Multiple-thread channels
 Multiple large channels are present across a vast
floodplain
 Channels and islands are more likely static

Question 16

Oxbow Lake

Answer 16

No stream or spring feeding the lake, and it doesn’t have a natural outlet.

Question 17

Alluvium

Answer 17

unconsolidated clay, silt, sand,
gravel, and mineral fragments deposited by running water

Question 18

Floodplains

Answer 18

Flat, low-lying area adjacent to a
channel and subjected to recurrent flooding

Question 19

Alluvial Stream Terraces

Answer 19

a flat bench or step like feature that is elevated above a stream channel.

Question 20

River Deltas

Answer 20

Mouth of a river → where river reaches base level