Rivers & Flooding Flashcards

(33 cards)

1
Q

What is the definition of a river journey?

A

The process by which a river erodes, transports, and deposits sediment along its course.

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2
Q

What are the three main processes of a river?

A

Erosion, transportation, and deposition.

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3
Q

True or False: Flooding can only occur during heavy rainfall.

A

False.

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4
Q

Fill in the blank: The area where a river overflows its banks is known as a ______.

A

Floodplain.

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5
Q

What is the primary cause of river flooding?

A

Excessive rainfall or snowmelt.

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6
Q

Name one case study of a flood in the UK.

A

The 2007 UK floods.

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7
Q

Multiple Choice: Which of the following is a method of flood management? A) Dredging B) Ignoring the problem C) Building more houses D) Planting trees

A

A) Dredging.

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8
Q

What is the term for the natural process of a river changing its course over time?

A

Meandering.

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9
Q

True or False: Urbanization can increase the risk of flooding.

A

True.

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10
Q

What is a flood hydrograph?

A

A graph that shows the rate of flow (discharge) versus time in a river.

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11
Q

Fill in the blank: The ______ is the area of land that drains into a river.

A

Watershed.

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12
Q

What are levees?

A

Artificial embankments built to prevent river overflow.

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13
Q

Multiple Choice: Which of the following can reduce flooding? A) Deforestation B) Wetland restoration C) Building on floodplains D) Paving over fields

A

B) Wetland restoration.

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14
Q

What is the term for the sediment that is carried by a river?

A

Load.

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15
Q

True or False: Flooding can have positive effects on the environment.

A

True.

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16
Q

What is the role of vegetation in flood management?

A

Vegetation helps to absorb rainfall and reduce runoff.

17
Q

Fill in the blank: ______ flooding occurs when heavy rain falls on already saturated ground.

18
Q

What is the difference between a flood watch and a flood warning?

A

A flood watch indicates potential flooding, while a flood warning means flooding is occurring or imminent.

19
Q

Multiple Choice: Which of the following is NOT a flood management strategy? A) Floodwalls B) River channelization C) Allowing natural flooding D) Building dams

A

C) Allowing natural flooding.

20
Q

What is the term for the process of sediment being dropped off by a river?

21
Q

True or False: Flood risk can be predicted using historical data.

22
Q

Name one impact of flooding on human communities.

A

Property damage.

23
Q

What is an example of a soft engineering flood management technique?

A

Riverbank restoration.

24
Q

Fill in the blank: The ______ is the main channel through which a river flows.

25
Multiple Choice: Which type of flooding is characterized by rapid onset? A) Flash flooding B) River flooding C) Coastal flooding D) Groundwater flooding
A) Flash flooding.
26
What is the primary purpose of floodplain zoning?
To restrict development in areas at risk of flooding.
27
True or False: Flooding can only be managed after it occurs.
False.
28
What is the role of dams in flood management?
Dams store excess water and control river flow.
29
Fill in the blank: The ______ is the maximum height reached by floodwaters.
Flood peak.
30
What is the significance of the River Thames in flood studies?
It is a key case study for urban flood management in the UK.
31
Multiple Choice: Which flood management technique involves altering the shape of the river channel? A) Afforestation B) River engineering C) Community awareness D) Flood forecasting
B) River engineering.
32
What does the term 'flash flood' refer to?
A sudden and intense flood that occurs within six hours of heavy rainfall.
33
True or False: Flood insurance is a common requirement for homeowners in flood-prone areas.
True.