WorksheetsLP Rivers Pt2
Total questions: 34
Worksheet time: 3hrs 39mins
What part of a river is this OS map of?
Upper course
Middle course
Lower course
Top course
Which section of the River Neath is this OS map?
Upper course
Middle course
Lower course
Bottom course
In which grid square (4 figure) is the spot height 206 metre?
(a)
What fluvial landform is at 983050?
Waterfall
River cliff part of a meander
Slip off slope part of a meander
Ox bow lake
Every time the river floods over its banks, it deposits the eroded material as the water is moving slowly. The heaviest material is dropped closest to the river, making a raised bank. What is that landform at X?
Floodplain
Levee
Estuary
Embankment
At this fluvial landform, the water flows fast in deep water due to less friction. What is the landform?
Slip off slope
Levee
Estuary
River cliff
What is at A?
Heavy rain
Basal flow
Peak rainfall
2 o'clock
What is F?
(a)
What is a C?
Peak rainfall
Peak discharge
Peak water
Basal flow
What is B?
Falling limb
Lag limb
Rising curve
Rising limb
What is E?
Basal limb
Rising limb
Basal flow
Peak flow
How long was the lag time?
12 hrs
8 hrs
4hrs
6hrs
What conditions create hydrograph A?
Concrete, deforestation, chalk, wet soil, steep land & low precipitation
Impermeable surface, afforestation, clay, wet soil, steep land & heavy precipitation
Concrete, deforestation, clay, wet soil, steep land & heavy precipitation
Concrete, deforestation, clay, baked solid ground, steep land & low precipitation
What are the conditions for the longer lag time of hydrograph B?
Urban landscape, afforestation, chalk, gentle slopes & light precipitation
Rural landscape, deforestation, chalk, gentle slopes & light precipitation
Rural landscape, afforestation, limestone, gentle slopes & heavy precipitation
Rural landscape, afforestation, chalk, gentle slopes & light precipitation
What is the definition of a fluvial soft engineering management strategy?
A structure that controls the river flow and to protect places from flood water.
When something is built to control the river flow and its discharge and to protect places from flood water.
Schemes that understand the hydrological cycle and reduce the effects of flooding. They adapt to flood risks and often work with nature.
Which statement is true for Embankments?
Natural banks which are effective at stopping erosion and can be used as footpaths but they look ugly.
Artificially built raised banks so the river can hold more water but they erode easily.
Natural banks that can hold more water but they erode easily.
Artificially built raised banks which are effective at stopping erosion and can be used as footpaths but they look ugly.
Which is the correct statement about floodplain zoning?
Hard engineering where land is used in different zones from the river. It is cheap, sustainable, works with nature but in LIC's, hard to enforce
Soft engineering where local authorities control how land is used in different zones from the river. It is expensive, & sustainable.
Soft engineering where land is used in different zones from the river. It is cheap, sustainable, works with nature but in LIC's, hard to enforce.
Soft engineering where land is used in different zones from the river. It is cheap, unsustainable, works with nature but in LIC's, hard to enforce.
Which statement is true about dams & reservoirs?
Cheap hard engineering structures which are built to control water. When water is released it can be used to create HEP (hydro electrical power).
Expensive soft engineering structures which are built to control water. When water is released it can be used to create HEP. Land is flooded to create the reservoir.
Expensive hard engineering structures which are built to control water. When water is released it can be used to create HEP. Land is flooded to create the reservoir.
Expensive hard engineering structures. When water is released it can be used to create solar power. Land is flooded to create the reservoir.
Which statement is correct for afforestation?
Sustainable soft engineering technique where trees absorb water and slow the speed at which water reaches the river. But it increases the risk of forest fires.
Unsustainable soft engineering technique where trees absorb water and slow the speed at which water reaches the river. But it increases the risk of forest fires.
Sustainable hard engineering technique where trees absorb water and slow the speed at which water reaches the river. But it increases the risk of forest fires.
Sustainable hard engineering technique where trees absorb water and slow the speed at which water reaches the river. But conifers are often planted which are acidic to the soil.
Which statement is true about flood warnings and preparation?
This is a cheap hard engineering technique where people are given warnings of the flood risk eg Siren. Hopefully they have time to move.
This is a cheap soft engineering technique where people are given warnings of the flood risk eg Siren. Hopefully they have time to move.
This is a hard engineering technique where people are given warnings of the flood risk eg Siren, alerts on TV's . However they are very expensive to set up.
This is a soft engineering technique where people are given warnings of the flood risk eg Siren, alerts on TV's . However they are very expensive to set up.
Which is the true statement about channel straightening?
Hard engineering deep channels which slowly carry water downstream.
Soft engineering deep channels which quickly carry water downstream to reduce flooding nearby but it can make places downstream flood.
Soft engineering deep channels which slowly carry water downstream to reduce flooding nearby but it can make places downstream flood.
Hard engineering deep channels which quickly carry water downstream to reduce flooding nearby but it can make places downstream flood.
Which statement is true about a flood relief channel?
They are expensive to build and require a lot of land. They are often used for watersports.
Soft engineering channel is built so extra water can be diverted away from settlements.
They are cheap to build and require a lot of land.
Hard engineering channel is built so extra water can be diverted away from settlements.
Which statement is true about river restoration?
This is a cheap soft engineering approach where the river is allowed to erode and deposit naturally.
It needs a lot of land to be left unused so the river can move freely.
This is an expensive hard engineering approach where the river is allowed to erode and deposit naturally.
It uses little land and there is a lot of flooding.
Name an example of a flood management scheme in the UK.
Flooding of the River Valency & River Jordan in Boscastle, NW Cornwall. 27th February 2010.
Flooding of the River Valency & River Jordan in Boscastle, NE Cornwall. 25th April 2015.
Flooding of the River Severn in Boscastle, NW Cornwall. 16th August 2004.
Flooding of the River Valency & River Jordan in Boscastle, NW Cornwall. 16th August 2004.
When did the River Valency, Boscastle flood happen?
27th February 2010
25th April 2015
1st March 2018
16th August 2004
What physical reasons caused flooding in Boscastle on 16th August 2004?
Permeable geology (Slate, clay & granite); Steep slopes; Heavy rain over short period of time (over 1400 million litres) & already wet soils.
Impermeable rocks (Slate, clay & granite); Steep valley sides; High tide; Heavy rain over short period of time & already wet soils.
Impermeable geology (Slate, clay & granite); Steep valley sides; Afforestation on the hills; Heavy rain over short period of time.
Permeable geology (Slate, clay & granite); Steep valley sides; Afforestation on the hills; Heavy rain over short period of time (over 1400 million litres)
What human reasons caused flooding in Boscastle on 16th August 2004?
Afforestation on the hills.
Tall flood walls.
Narrow bridges and narrow flood walls.
Deforestation on the hills.
How many cars & boats were washed away in the River Valency, Boscastle flood on 16th August 2004?
100 cars & 8 boats
75 cars & 8 boats
75 cars & 100 boats
8 cars & 75 boats
What happened at Boscastle on 16th August 2004?
3 metre wall of water travelling at 60m which swept away 75 cars & 8 boats.
500 buildings damaged including the Museum of Witchcraft and YHA. £500 million worth of damage.
10 metre wall of water travelling at 60m which swept away 75 cars & 8 boats.
100 buildings damaged including the Museum of Witchcraft and YHA. £15 million worth of damage.
To protect Boscastle, £4.5 million was spent on reducing the risk of flooding. This included hard engineering of ...
Bridges made smaller and narrower; River Valency channel made shallower.
Bridges made higher and wider; River Severn channel made deeper and wider.
Bridges made higher and wider; River Valency channel made deeper and wider.
Bridges made smaller and narrower; River Valency channel made deeper and wider.
To protect Boscastle, £4.5 million was spent on reducing the risk of flooding. This included soft engineering of ...
Electronic monitor of water height on County bridge. Trees planted on hills.
Bridges made smaller and narrower; Car park raised and moved further away from river.
Car park raised and moved further away from river.
Car park raised and moved further away from river. River Valency channel made shallower.
What were the social effects of the River Valency flood in Boscastle on 16th August 2004?
People lost 100 cars and 8 boats as well as 75 buildings being damaged.
Bats, birds and dormouse were killed.
People lost 75 cars and 8 boats as well as 100 buildings being damaged.
Tourists could not go to the YHA (place to stay) or the Museum of Witchcraft.
What were the environmental issues of the River Valency flooding in Boscastle on 16th August 2004?
Tourists stopped visiting such places as the Museum of Withcraft and (YHA) Youth hostel.
The water was polluted with sewage and drinking water was not safe to drink.
People didn't have anywhere to sleep as 100 buildings were damaged.
Trees were knocked down and also bats, birds and dormouse were killed.
What were 2 economic effects of the River Valency, Boscastle flood on 16th August 2004?
Bats, dormouse and birds were killed.
100 buildings were damaged so people had to claim on their insurance which put their premiums up.
Tourists did not visit after the floods so the YHA, Museum of Witchcraft and the Wellington hotel lost money
8 buildings were damaged so people had to claim on their insurance which put their premiums up.
