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Worksheets

Rivers

Total questions: 18

Worksheet time: 10mins

Name
Class
Date
1.
Every river begins from
a)
a mouth
b)
a source
c)
a plain
d)
a mountain
2.
We can divide the river course into
a)
four parts, the first, the second, the third and the fourth
b)
three parts, the mr Imbò's one, the Ms Daminato and the Ms Moro's ones
c)
three parts, the upper, the intermediate, and the lower course
d)
three parts, the upper, the middle and the lower course
3.

Every river has processes of transportation, which are

a)

solution, suspension, corrasion and saltation

b)

solution, suspension, saltation and attrition

c)

solution, suspension, saltation and traction

d)

solution, hydraulici action, corrasion and traction

4.
Solution is
a)
a process of erosion and a way in which the river carries dissolved minerals
b)
just a process of erosion, who are you kidding?!
c)
a process of transportation in which dissolved minerals are carried along the river course
d)
a process of depositon
5.

The material that a river carries is called

a)

load

b)

mouth

c)

stones

d)

river bed

6.

Read the definition and identify it: "The process of transportation in which the lightest particles of soil and sand that make the river look cloudy as are carried along, is called .."

a)

solution

b)

suspension

c)

saltation

d)

traction

7.

You have "traction" when

a)

the transported minerals are dissolved in the water

b)

smaller particles such as stoned bounce along the river bed

c)

the heaviest particles - large stones and rocks - roll along the river bed

d)

the lightest particles of soil and sand are carried along the river course

8.

What are the four main processes of erosion?

a)

Hydraulic action, abrasion, attrition and solution

b)

Hydraulic action, corrasion, saltation and solution

c)

Hydraulic action, abrasion, attrition and saltation

d)

Ask Ms Daminato, I can't be bothered!

9.

Hydraulic action is when

a)

sand and stones rub against the bank and bed and knock off other particles

b)

the force of the water knocks particles off the banks and the river bed

c)

boulder and large stones carried by the river collide with each other and break into smaller pieces

d)

when acids in the river dissolve the rocks that make up the bank and bed

10.
When does deposition occur?
a)
When the river slows down, for example when it spreads out or a moutain slope
b)
When the river slows down, for example when it spreads out a wide valley or when it flows into a lake
c)
When the river is flowing in the upper course
d)
As ms Moro
11.

Deposition usually occurs …

a)

in the upper course

b)

in the lower course

c)

in the middle course

d)

everywhere, stop bluffing!

12.

Interception is when

a)

the rainfall leaks into the soil and creates groundwater

b)

the rainfall falls on leaves and trees and does not reach the soil

c)

rainfall evaporates due to the sun energy

d)

raifall flow over land moved due to the grativty

13.

The bigger the gravity

a)

the slower the river flows

b)

the higher the evaporation

c)

the faster the river flows

d)

the louder mr Imbò laughs

14.
The V- Shaped valley is a characteristic of
a)
the lower course
b)
the upper course
c)
the middle course
d)
the upper and the middle course
15.

In the upper cours of a river the channel is

a)

shallow

b)

flat

c)

steep

d)

has meanders

16.

In the upper course the water is

a)

turbulent

b)

clear

c)

deep

d)

slow moving

17.
Infiltration is
a)
when water reaches the soil and flows under the ground
b)
when the water is stopped by the trees and infiltrates into the plants
c)
who knows? Why are you asking me this!?
d)
when the water flows into the sea
18.

What are the main characteristics of the upper course

a)

steep gradient, v-shaped vallery, vertical erosion and meanders

b)

steep gradient, v-shaped valley, vertical erosion, waterfalls and rapids

c)

V-shaped valley, meanders, waterfalls and gentle gradient

d)

steep gradient, v-shaped vallery, vertical erosion, waterfalls and deltas