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WorksheetsRivers
Total questions: 25
Worksheet time: 18mins
Name
Class
Date
1.
What is the name of the point where a river starts?
a)
Source
b)
Point A
c)
Heart
d)
Opening
2.
What is the name of the point where a river ends?
a)
Tributary
b)
Water Shed
c)
Confluence
d)
Mouth
3.
What the name of an area of highland surrounding a river basin?
a)
A. Watershed
b)
B. Discharge
4.
What is the name of the point where two rivers meet
a)
Connection
b)
Confluence
c)
Merging
d)
Tributary
5.
In the natural environment, water flows in a?
a)
Straight Line
b)
Channel
6.
How is River Flooding Cause
a)
Impermeable Rock
b)
Heavy Rainfall
c)
Dry Soil
d)
No Protection
7.
How can I prevent flooding from happening again and save are town ?
a)
Move out
b)
flood defences
c)
use sandbags
d)
clean gutters
8.
What is the name of the Longest Rivers in the World
a)
Amazon
b)
Nile
c)
Parana
d)
Mississippi-Missouri-Red Rock
9.
Waterfalls often form in the upper stages of a river where it flows over different bands of rock. What type of rock dose it erod
a)
Hard
b)
Soft
10.
Explain the differences in the size and shape of the material on the river bed in the upper and lower courses of a river
a)
A. In the upper course load is smaller and more rounded than in the lower course because of erosional processes such as attrition and corrasion.
b)
B. As a river moves through its course, because of the greater incidence of larger settlements, more supermarket shopping trolleys are likely to be found in rivers, adding to the load that has already been deposited.
c)
C. In the lower course load is smaller and more rounded than in the upper course because of erosional processes such as attrition and corrasion.
11.
A river may erode by the processes of corrosion, attrition, corrasion or hydraulic power. For hydraulic power describe how it works
a)
A This is when river water and its load are thrown against the river banks causing erosion
b)
B Water and air are forced into cracks on the river bank, exerting a pressure. When this process is repeated many times it causes erosion
c)
C A river carries large amounts of load that are constantly smashing into each other and breaking into smaller particles. This makes the load smaller and more rounded over time.
12.
Traction, saltation, suspension and solution are the 4 methods of transport of material along a river. For saltation explain how each it works
a)
A small peebles bounce along the river bed.
b)
B large boulders roll along the river bed
c)
C fine material is carried along, suspended in the water
13.
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 swallow 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 and discharge increases
14.
The formation of a waterfall and gorge
a)
A. Niagara Falls is one of the best known waterfalls in the world. There are actually two waterfalls together which have been formed as a gorge has worn down the Niagara river. Angel falls, in Venezuela is the biggest waterfall in the world
b)
B. Sometimes water takes a short cut to the sea by going over a waterfall. A good example of a gorge is Ironbridge gorge, Shropshire. It has a fantastic iron bridge over the river Severn
c)
C. If a river flows over hard rock which lies on top of exposed softer rock, the softer rock may be undercut by erosion, forming a waterfall. If the waterfall retreats upstream it can form a steep sided valley called a gorge
15.
What features are associated with waterfalls
a)
A. Niagara, Victoria, Angel, High Force
b)
B. Plunge pool, undercutting, hard and soft rock.
c)
C. Weathering, erosion, transportation and deposition
16.
What river features and landforms are associated with a cross section or profile of a river valley in its upper course.
a)
A. river source, V-shape, interlocking spurs, narrow and shallow river channel
b)
B. delta, flood plain, river mouth, levees, wide and deep river channel
c)
C. sheep farming, wind turbines, HEP (hydro-electric power) stations and dams and reservoirs
17.
Which of the following features are not formed by river deposition
a)
A. levee
b)
B. gorge
c)
C. delta
18.
What are meanders
a)
A. they are bends in a river
b)
B. they are bends in a river formed by a
river as the volume of water increases in its lower course. The shaping of a
meander bend is helped by erosion on the outside of the bend and deposition on
the inside of the bend.
c)
C. meanders migrate across
their flood plain, widening the river valley and helping to form a flood plain
19.
Explain how the features of a meander are formed
a)
A. river cliff forms on the
inside of a river bend as a result of faster flowing water and its load causing
erosion and undercutting the river bank. A slip off slope forms on the outside
of a river bend where the river is flowing more slowly and deposition takes
place
b)
B. a river cliff forms on
the outside of a river bend as a result of faster flowing water and its load
causing erosion and undercutting the river bank. A slip off slope forms on the
inside of a river bend where the river is flowing more slowly and deposition
takes place
c)
C. a river cliff forms on the
outside of a river bend as a result of faster flowing water and its load
causing deposition on the bank. A slip off slope forms on the inside of a river
bend where the river is flowing more slowly and erosion takes place
20.
Identify 3 features of the lower course of a river
a)
A. waterfalls, sheep farming,
large boulders
b)
v-shaped valley,
interlocking spurs, river source
c)
C. flood plain, meander, delta
21.
which of the following are examples of soft river engineering
a)
A. Dredging and flood relief channels
b)
B. Dams and levees
c)
C. River restoration and land use zoning
22.
Describe the effects of a flood
a)
A. The Chichester floods of 1994. Damage to property, communications cut off and damage to crops
b)
B. New Orleans Flood of 2005. Loss of lives, homes and livelihoods. Estimated 500,000 displaced people. People injured and ill. Some people looted from businesses and America’s reputation was damaged
c)
B. Mississippi floods of 1993. 28 lives lost and 10$ billion repair costs
23.
What is river discharge
a)
A. This is how a river responds to a period of rainfall. It is the amount of water that passes a point in a river over a period of time. It is measured in Cumecs
b)
B. This is the height of the river. When it rains the river rises and then later returns to its base flow
c)
C. This is shown on a hydrograph. It has a rising limb and a falling limb. It shows rainfall, including peak rain. It is also possible to calculate the lag time from the difference between peak rain and peak discharge
24.
suggest 2 ways settlements could be protected from flooding in the future
a)
A. Countries could reduce their emissions of carbon dioxide thereby reducing the risk of the ice caps melting and thus flooding occurring
b)
B. Build levees and flood relief channels
c)
C. Countries could build expensive dams, dredge river beds and increase river channel capacity or plant trees in large areas of a river’s catchment to reduce river discharge
25.
Suggest 2 ways settlements could be protected from flooding in the future
a)
A. Countries could reduce their emissions of carbon dioxide thereby reducing the risk of the ice caps melting and thus flooding occurring
b)
B. Build levees and flood relief channels
c)
C. Countries could build expensive dams, dredge river beds and increase river channel capacity or plant trees in large areas of a river’s catchment to reduce river discharge
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