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River Processes

Total questions: 43

Worksheet time: 22mins

Name
Class
Date
1.
This term indicates the total length of the bed and the bank that is in contact with the river.
a)
wetted perimeter
b)
banks
c)
bed
d)
discharge
2.
The volume of water passing a given point over a set of time.
a)
velocity
b)
speed
c)
volume
d)
discharge
3.
How is discharge calculated?
a)
Multiplying the cross-sectional area of the river with the velocity of a river.
b)
Multiplying the average depth with the average width
c)
Multiplying the velocity with the wetted perimeter
d)
It is the same as the volume of a stream
4.
True or False? Mountain streams on steep slopes have a low velocity because the water flows in a turbulent movement.
a)
True
b)
False
5.
True or False? Deep narrow streams flow slower than shallow wide streams if all other factors are the same.
a)
True
b)
False
6.
True or False? Rivers tend to flow slowest in their lower courses.
a)
True
b)
False
7.
Where will the particle size in a stream be the smallest according to the Bradshaw model?
a)
Upper course
b)
Middle course
c)
Lower course
8.

Where is the slope angle the steepest on a stream's longitudinal (long) profile

a)

upper course

b)

middle course

c)

main course

d)

lower course

9.

Any form of water that falls to Earth’s surface from the clouds, including rain, snow, sleet, and hail

a)

desalination

b)

delta

c)

tributary

d)

precipitation

10.

Change of state from a gas to a liquid

a)

evaporation

b)

condensation

c)

desalination

d)

precipitation

11.

Area of land drained by a river system

a)

tributary

b)

delta

c)

floodplain

d)

watershed

12.

Volume of water moved by a stream in a given time period

a)

tributary

b)

delta

c)

discharge

d)

evaporation

13.

The total water loss from an area by evaporation and transpiration

a)

watershed

b)

evapotranspiration

c)

desalination

d)

floodplain

14.

Stream that flows into a lake or into a larger stream

a)

watershed

b)

floodplain

c)

desalination

d)

tributary

15.
A river system begins to form in a given area when
a)
evapotranspiration exceeds precipitation.
b)
precipitation exceeds evapotranspiration.
c)
precipitation exceeds condensation.
d)
condensation exceeds precipitation.
16.
What is water that flows in rivers and streams into the oceans and lakes?
a)
evaporating
b)
condensing
c)
precipitating
d)
runoff
17.
Which of the following is the key term that describes the point at which a small river enters another river
a)
Tributary
b)
Watershed
c)
Source
d)
Confluence
18.
A small stream or river feeding into the main river is known as...
a)
Confluence
b)
Source
c)
Tributary
d)
Mouth
19.
What is the name of the point where a river starts?
a)
 Source
b)
 Point A
c)
 Heart
d)
Opening 
20.
Hydrology is the scientific study of water. 
a)
True
b)
False
21.
An area of new land at the mouth of a river.
a)
Sand Dune
b)
Delta
c)
Fault
d)
Glacier
22.
Stream discharge is a function of the channel's width, depth, and 
a)
length
b)
velocity
c)
sediment size
d)
slope
23.
a)

aquifer

b)

oxbow lake

c)

discharge

d)

confluence

24.
a)

Delta

b)

braided river

c)

watershed

d)

till

25.
a)

runoff

b)

headwater

c)

mouth

d)

run

26.
a)

runoff

b)

recharge

c)

discharge

d)

pool

27.

Smaller streams

a)

tributaries

b)

discharge

c)

alluvial fan

d)

aquifer

28.

Give reasons for the differences in cross sections of rivers in the upper and lower courses

a)

A. In the upper course rivers are narrow and shallow because the river is less powerful and discharge relatively low. In the lower course the river is wider and deeper as the river carries more load, discharges more and has more power to erode.

b)

B. In the upper course rivers are wide and deep because the river is less powerful and discharge relatively low. In the lower course the river is narrow and shallow as the river carries more load, discharges more and has less power to erode.

c)

C. As a river moves from its upper to its lower course, it tends to carry more load, is wider, deeper, faster flowing because discharge decreases

29.

The change in elevation over a given distance

a)

gradient

b)

discharge

c)

meander

d)

streamload

30.

The high land area that separates watersheds is called a

a)

bed load

b)

floodplain

c)

divide

d)

basin

31.
The triangular deposition of sediment that forms where a stream/river enters a large body of water, such as a lake or ocean, is called 
a)
Alluvial fan
b)
Delta
c)
Flood plain
d)
Meander
32.
The steepness or vertical drop of a stream or river
a)
discharge
b)
runoff
c)
gradient
d)
channel
33.

Sediment is deposited in a river delta because the

a)

velocity of the river decreases

b)

force of gravity decreases

c)

volume of the river increases

d)

gradient of the river increases

34.
There are several river process in a watershed, order this from largest to smallest.
a)
tributaries, rivers, river systems
b)
tributaries, river systems, rivers
c)
rivers, tributaries, river systems
d)
river systems, rivers, tributaries
35.
What is the type of water that moves underground?
a)
surface water
b)
water table
c)
groundwater
d)
watershed
36.

Which of the following DOES NOT help determine the amount of runoff.

a)

The amount of vegetation

b)

The amount of precipitation

c)

Topography

d)

Salinity of the water

37.

The transported material in a river is called...?

a)

sediment

b)

load

c)

discharge

d)

laminar flow

38.
Where do deltas form?
a)
Desert Areas
b)
At river mouths
c)
On the Banks of Rivers
d)
In Valleys Formed by Glaciers
39.

Which of the following does not affect river velocity?

a)

channel shape

b)

channel slope

c)

river load

d)

roughness of the channel's bed and banks

40.

Which type of river flow contains horizontal and vertical eddies?

a)

laminar flow

b)

turbulent flow

c)

lenticular flow

d)

confluence flow

41.

What is hydraulic radius?

a)

the ratio between the area of the cross-section of a river channel and the length of its wetted perimeter

b)

the width and the mean depth of the channel

c)

the total length of the bed and bank sides in contact with the water in the channel

d)

none of these

42.

The greatest velocity of a river is...

a)

near banks, bed, and air

b)

away from banks, bed, and air

c)

away from friction

d)

in areas of greater friction

43.

What is Manning's N used to calculate?

a)

river discharge

b)

river velocity

c)

hydraulic radius

d)

roughness coefficient

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