Ch16

Question 0

Channeled movement of water along a valley bottom.

Answer 0

Stream flow

Question 1

the unchanneled movement of surface water down a slope

Answer 1

Overland flow

Question 2

That portion of the total terrain in which a drainage system is clearly established.

Answer 2

Valley

Question 3

The higher land above the valley sides that separates adjacent valleys

Answer 3

Interfluve

Question 4

An area that contributes overland flow & groundwater to a specific stream (also called a watershed or catchment) terminates at drainage divide

Answer 4

Drainage basin

Question 5

The line of separation between runoff that descends into two different drainage basins

Answer 5

Drainage divide

Question 6

When something is transferred to another location and set down

Answer 6

Deposition

Question 7

• involve running water
• running water is earths most important external agent
• it is ubiquitous (everywhere except Antarctica) frozen glaciers not water.

Answer 7

Impact of

FLUVIAL PROCESSES

Question 8

• also involves running water & FLUVIAL processes

- CHANNELED movement of watt along valley bottom. Wether tiny creek or enormous river.

Answer 8

Stream flow

Question 9

UNCHANNELED downslope movement of water along surface water.

Answer 9

Overland flow

Question 10

This is a drainage system of channeled (stream) flow. The portion of terrain where the drainage system is clearly established. partially or totally occupied by a channel of stream. ““Bottom and ““walls that rise above “” bottom in both sides.

Answer 10

Valley

Question 11

No clearly established channeled flow. Higher land area between valleys. Overland flow. Higher land above valley walls that separated adjacent valleys. anything in the terrain not part of the valley is an?

Answer 11

Interfluve

Question 12

Valley bottoms, valley sides, interfluves that drain toward the valley are the divide sub basins of

Answer 12

The drainage basin

Question 13

Line of separation between runoff that discards in the direction of one drainage basin,

Answer 13

Drainage divides

Question 14

the hierarchy of smaller tributary sub basins are part of the “”

Answer 14

Main stream basin.

Question 15

1st order stream is the smallest stream, has no tributaries.
2nd order behind at the confluence of 1st order streams.
3rd order begins at the confluence of the 2nd order streams.

Answer 15

Stream orders.

Divide of main drainage basin.

Question 16

Load
Types of load
Competence/capacity.

Answer 16

Transportation

Question 17

Amount of loads water can carry depends on 2 things
Speed/velocity
And volume.
(And slope)

Answer 17

Load

Question 18

When volume and speed /velocity decreases, this happens

Answer 18

Transportation deposition

Question 19

This begins when rain falls over the lithosphere

Answer 19

Erosion

Question 20

1. Particles move downhill on slope

2. Across surface as a thin sheet

Answer 20

Splash erosion

Sheet erosion

Question 21

1. Turbulence breaks up into tiny channels.

2. fewer larger gullies. Goes from land flow to stream flow.

Answer 21

Rills erosion

Gully erosion

Question 22

Bed load
Saltation
Traction
Dissolved (pushing)& suspended (bouncing/jumping)load.

Answer 22

Types of load

Question 23

1. Minerals mostly salts, dissolved -load
2. Fine particles of clay & silt carried in suspension very slow settling speed-suspended load
3. sand/gravel & large rocks- bed load.

Answer 23

Types of loads defined

Question 24

Stream deposited sediment””. When smooth, sorted rounded particles become stratified deposits. That cause a decrease in flow speed. Usually reduced to 1.2.3.4.5.6 what are they in order?

Answer 24

ALLUVIUM.

1. boulders.
2. cobblers.
3. pebbles.
4. sand.
5. silt.
6. clay.

Question 25

Periods of peak stream flow, -erode upper portions of valleys -form vast flood plains in lower parts of valleys.

Answer 25

Floods

Question 26

Stream that flows w/water 12months of the year.

Streams that flow during rain, “intermittent stream” seasonal. water only in wet season.

Answer 26

Perennial

Ephemeral

Question 27

Tightly curved loops.
Abandoned channels.
“Mississippi river”
Where land is flat, like in large flood plains.

Answer 27

Meandering channels

Question 28

Erosion occurs ““of the curves.

Deposition occurs “” of the curves.

Answer 28

Outside

Inside

Question 29

Erosion takes place here because water moves faster. Outer curve also called “”

Answer 29

Outer-bank

Question 30

Inside bank, inside curve, also called “” where deposition takes place and water moves slow

Answer 30

Point bar

Question 31

When a river cuts across a “” of a meander, the river bend becomes an “” lake. And then an”” swamp and then a “ scar.

Answer 31

Neck
Oxbow
Oxbow
Meander

Question 32

A measure of the particle size a steam can transport, expressed by the diameter of the largest particle that can e moved. Depends on flow and speed.

Answer 32

Competence

Question 33

Measure of amount of solid material a stream has the potential to transport, normally expressed as volume of material passing a given time interval.

Answer 33

Capacity

Question 34

A type of stream drainage pattern that reflects the underlying geologic structure or topography. It is the most common drainage “tree like” pattern and numerous. Random merging of streams, tributaries joining larger streams irregularly but always at an angle of 90 or less. whose underlying structure does not control the pattern evolution.

Answer 34

Dendritic drainage pattern

Question 35

This team pattern develops in response to underlying structure containing alternating bands of tilted hard and soft rocks, long parallel streams cut into soft rocks and parallel stream jointed by short right angle 90 degree segments

Answer 35

Trellis drainage pattern

Question 36

Water follows digging deeper in entrenched “”

Answer 36

Meanders

Question 37

Down Cutting and V shaped heads to the upper ends of a valley, rapid speed and volume. Area.

Answer 37

Valley deepening .

Question 38

Lateral erosion by a meandering stream. Area.

Answer 38

Valley widening

Question 39

Headward erosion. (Lower end lengthens valley.) delta formation (deposition happens seaward in quiet waters) (linear)

Answer 39

Valley lengthening.

Question 40

William Davis theory of landform formation. (geomorphology cycle) “cycle of erosion” stages.

Answer 40

Youth
Maturity
Old age
Rejuvenation

Question 41

Surface is uplifted rapidly, erosion has little time till uplift is completely flat land far above sea level. What stage is this?

Answer 41

1. Youth.

Question 42

Equilibrium condition, smooth profiles, stream meanders. Extensive drainage. System. Absence of initial surface. what stage?

Answer 42

2nd maturity

Question 43

Slopes absent. Extensive floodplains. Flat features. Landscape “peneplain” almost plain. Why stage? Entrenched Meanders.

Answer 43

3rd old age

Question 44

Raise land, interrupt cycle at any stage. Reenergize system initiates period of down cutting and cycle restarts. What stage?

Answer 44

Rejuvenation

Question 45

Flat surface is uplifted, incised by fluvial erosion into slopes and valleys then denuded till its flat surface if low elevation again.

Answer 45

Geomorphic cycle -William Davis