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River Processes

Total questions: 60

Worksheet time: 45mins

Name
Class
Date
1.

The diagram shows the river process of erosion. In a fast-flowing rive, water is forced into cracks in the bank. Over time this breaks the bank up. It is called _______________ .

a)

Attrition

b)

Hydraulic action

c)

Solution

d)

Abrasion

2.

In the process of river transport, when small stones and pebbles are leaped or skipped along by the river current, this is called _____________ .

a)

Suspension

b)

Solution

c)

Saltation

d)

Traction

3.

In the last river process of deposition, boulders, cobbles, pebbles, sand, silt and clay are deposited in that order because ____________________

a)

it is in alphabetical order, and they have to follow their turn when getting of the river transporter.

b)

bigger stones are less heavy than smaller pebbles

c)

the river transporter has had enough of these hard cases.

d)

the heaviest material are deposited out first, followed by the less heavy material and lastly the lightest material.

4.

Looking at the long profile of the river's course, where does most erosion occur?

a)

Upper course

b)

Middle course

c)

Lower course

d)

The mouth

5.

Looking at the river process of transport, when soluble material and minerals are dissolved into the water and carried along, this is called _______________ .

a)

Saltation

b)

Solution

c)

Traction

d)

Suspension

6.

In the river process of erosion, when rocks and stones in the water act like sandpaper and scrape the river bed and bank, wearing them away, this is called ____________ .

a)

Solution

b)

Attrition

c)

Hydraulic action

d)

Abrasion

7.

In which part of the river does water flow the fastest?

a)

Upper course

b)

Middle course

c)

Lower course

8.

What name is given to the bottom of the river?

a)

River Bank

b)

River Bed

c)

Delta

9.
When rocks bang together becoming rounder, smaller  and smoother.
a)
Hydraulic Action
b)
Attrition
c)
Abrasion
d)
Corrosion
10.
Which of these is the odd one out?
a)
Traction
b)
Saltation
c)
Suspension
d)
Abrasion
11.
Which method of transportation is the rolling of large boulders along the river bed?
a)
Traction
b)
Suspension
c)
Saltation
d)
Solution
12.
Small particles which are carried in the water is what type of transportation?
a)
Traction
b)
Solution
c)
Suspension
d)
Saltation
13.
This type of erosion occurs when the rocks being carried by the river scrape away the bed and banks.
a)
Abrasion
b)
Hydraulic Action
c)
Attrition
d)
Corrosion
14.
Which method of transportation is 'bouncing' medium sized particles along the river bed?
a)
Traction
b)
Saltation
c)
Suspension
d)
Solution
15.
Some particles are dissolved by the river and transported. What is this process called?
a)
Traction
b)
Saltation
c)
Suspension
d)
Solution
16.
Some particles are eroded by being dissolved in the weak acids of water.
a)
Corrosion
b)
Abrasion
c)
Attrition
d)
Hydraulic Action
17.
Which is the odd one out?
a)
Hydraulic Action
b)
Abrasion
c)
Corrosion
d)
Attrition
18.

What is carried downstream by a river?

a)

boulders

b)

rocks

c)

silt

d)

load

19.

Attrition occurs when...

a)

particles of load collide and knock pieces off each other

b)

smaller material rubs against the bed and banks of the river

c)

acid in the water dissolves particles of rock from the bed and banks of the river

d)

the sheer force of the water and air forcing itself into the soil

20.

What happens when smaller material rubs against the bed and banks of the river?

a)

attrition

b)

corrosion

c)

abrasion

d)

hydraulic action

21.

The sheer force of water and air forcing itself into the soil and moving away parts of the land and banks of the river is called....

a)

hydraulic action

b)

corrosion

c)

abrasion

d)

attrition

22.

How would you describe the channel at the upper course of the river?

a)

Deep

b)

Shallow

c)

Narrow

d)

Wide

23.

When the velocity of the river decreases, it no longer has enough energy to carry its sediment. The sediment will be dropped at the river bed/river bank. Which process is this?

a)

Erosion

b)

Deposition

c)

Transportation

d)

Saltation

e)

Lateral Erosion

24.

_______________ is responsible for carrying materials along the river.

a)

Erosion

b)

Transportation

c)

Deposition

d)

Abrasion

25.

The valley walls of a river are the steepest at which river course?

a)

Upper

b)

Middle

c)

Lower

26.

Where does deposition mostly occur?

a)

Upper Course

b)

Middle Course

c)

Lower Course

27.

Where does erosion mostly occur?

a)

Upper Course

b)

Middle Course

c)

Lower Course

28.

Where does transportation mostly occur?

a)

Upper Course

b)

Middle Course

c)

Lower Course

29.

Which river process is mostly responsible for the formation of deltas and floodplains?

a)

Erosion

b)

Transportation

c)

Deposition

30.

Pick the correct order

a)

Transportation, weathering, deposition, erosion

b)

weathering, erosion, transportation, deposition

c)

Erosion, transportaion, depositon, weathering

d)

stream "walls" by louis tomlinson

31.
How are valleys formed?
a)
formed by the effects of running water creating a v-shaped land area
b)
formed by erosion and weathering of soft rock caused by the movement of water creating steep walls
c)
formed by the deposition of sediments carried by the river as the water flows out of the mouth creating the fan shaped opening.
d)
formed by the wind moving the sand and rocks to another spot
32.

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

33.
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.
34.
The steepness or vertical drop of a stream or river
a)
discharge
b)
runoff
c)
gradient
d)
channel
35.

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

36.

When soluble particles are dissolved into the river it is called:

a)

Hydraulic Action

b)

Abrasion

c)

Saltation

d)

Solution

37.

Tiny particles such as silt are usually transported:

a)

in solution

b)

in suspension

c)

by saltation

d)

by traction

38.

How many ways is the load transported in the river?

a)

3

b)

4

c)

2

d)

1

39.

Lateral erosion results in the....

a)

deepening of a rivers channel

b)

shortening of a rivers channel

c)

widening of a rivers channel

d)

thinning of a rivers channel

40.

The lower course of the river has...

a)

mostly erosion landforms

b)

mostly erosion and deposition landforms

c)

no landforms

d)

mostly deposition landforms

41.

Which of the following definitions describes deposition?

a)

The dumping of bedload being transported in the river

b)

The gradual wearing away of sediment over time

c)

The way in which the river picks up sediment and transports it down the river

d)

The removal of sediment from the river

42.

Large rocks are most likely to be deposited in the...

a)

upper course of the river

b)

middle course of the river

c)

lower course of the river

d)

never

43.

Attrition occurs when...

a)

the river flows over limestone or chalk

b)

the river comes to an end

c)

stones carried by the river knock against each other

d)

when the load of the river repeatedly hits the bed dislodging particles into the flow of a river

44.

Fluvial processes refers to...

a)

coastal processes

b)

river processes

c)

highland processes

d)

lowland processes

45.

What stage of a river is closest to the ocean?

a)

Youthful

b)

mature

c)

old

46.

What is it called when a river wears away the landscape?

a)

Deposition

b)

Transportation

c)

Erosion

d)

Weathering

47.

What would a river do if it's speed increased?

a)

Deposit material

b)

Transport material

c)

Erode material

d)

All the above

e)

Erode and Transport

48.

Small particles such as sand and silt are usually transported:

a)

in solution

b)

in suspension

c)

by saltation

d)

by traction

49.

Which is a method of transportation and erosion?

a)

Solution

b)

Saltation

c)

Hydraulic action

d)

Suspension

50.

Erosion occurs on the _________ bend of meanders.

a)

outer

b)

inner

c)

lateral

d)

vertical

51.

Why does vertical erosion dominate the upper course?

a)

Steep gradient

b)

Shallow gradient

c)

High discharge

d)

Low discharge

52.

What happens to the depth and width of a river as it moves towards the lower course?

a)

narrower and shallower

b)

narrower and deeper

c)

wider and shallower

d)

wider and deeper

53.

Define the term discharge

a)

the amount of water in the river

b)

the amount of sediment in the river

c)

the speed of the river

d)

the gradient of the river

54.

Why does the river become faster in the lower course?

a)

As discharge DECREASES, friction (slowing the velocity) INCREASES.

b)

As discharge DECREASES, friction (slowing the velocity) DECREASES.

c)

As discharge INCREASES, friction (slowing the velocity) DECREASES.

55.

Which course / stage is this river in, and how do you know this?

a)

lower course - discharge is high

b)

upper course - discharge is low

c)

upper course - discharge high

d)

upper course - gradient is high

56.

Which course / stage is this river in, and how do you know that?

a)

lower course - discharge low

b)

upper course - gradient high

c)

lower course - gradient low

d)

lower course - discharge is high

57.

What type of transportation is this?

a)

saltation

b)

suspension

c)

traction

d)

solution

58.

What is the lag time?

a)

how much rain falls

b)

time it takes for the water to make its way into the river

c)

the difference between the peak rainfall and the point at which the river contains the largest amount

d)

how much water is in the river

59.

What stage of the river moves the fastest?

a)

youthful

b)

mature

c)

old

d)

They all move at the same speed

60.

In the Youthful Stage of a river (in the mountains), what shape valley does the river cut into the hillside?

a)

"S" shape

b)

"U" shape

c)

"L" shape

d)

"V" shape

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