Flooding Flashcards Preview

OCR Geography A2 > Flooding > Flashcards

Flashcards in Flooding Deck (38):
1

How many people were made homeless by the 1998 floods in Bangladesh?

30 million

2

In 1998, ................ of Bangladesh was underwater for ....... days.

Two thirds, 50

3

The rivers flowing through Bangladesh drain a basin ....... times the size of Bangladesh.

10

4

Why is aggradation an issue in Bangladesh?

Irrigation in China and Nepal causes silt to enter the rivers; this is then deposited in Bangladesh and reduces the capacity of rivers

5

How much has Bangladesh's population increased in recent decades?

Between 1960 and 2010, population grew from 58 million to 158 million

6

How many people in Bangladesh live below the poverty line (and therefore cannot protect themselves from flooding)?

50 million

7

How much does flooding in Bangladesh cost on average?

3-10% of GDP

8

What are three sustainable development projects being run in Bangladesh?

Practical Action's fishing, pumpkin farming, Christian Aid's ducks

9

Why do water-borne diseases such as cholera thrive during floods in Bangladesh?

Many people live very close together in slums or have to move into temporary shelters during the floods, and have very little access to healthcare

10

How much of the world's population lives in the coast?

10%

11

What were the peak wave periods in the Atlantic in 2014?

Over 20 seconds

12

How high were some waves in the Atlantic in 2014?

Over 10m

13

In 2014, what was the most costly damage in the UK floods?

The destruction of the London-Penzance railway at Dawlish in South Devon; the regional economy lost £1-20 million a day for the two months it was closed

14

Why are storm waves so destructive?

Longer wave periods show fast movement, energy proportional to height squared, slightly bigger wave has a lot more energy

15

What evidence was there of cliff shaking in the UK 2013/2014?

Porthcothan arch and Pom Pom Rock stack collapsed, seismometers in Porthleven cliffs

16

How long did some villages stay underwater in Somerset?

7 weeks

17

How deep was the moorland flooding in Somerset?

3 feet

18

How many homes were flooded in Somerset?

600

19

Why did the water stay in Somerset for so long?

Flat reclaimed land, doesn't drain

20

What management was in place upstream of Bridgewater?

A moor was left as sacrificial land, however the flooding was worse than expected so it spilled over into neighbouring fields and homes

21

The EA said it had protected 1.3 million homes. What evidence is there to suggest this?

In 2007, 48,000 homes were flooded in Tewkesbury; only 6,000 were flooded in 2014

22

What is the Jubilee river?

A £110 million artificial channel protecting Maidenhead, Eton and Windsor

23

How many homes does the Jubilee River protect?

3,000

24

What is a disadvantage of the Jubilee River?

It rejoins the Thames at Wraysbury, increasing the likelihood of flooding

25

What was the effect of the 2013/2014 winter storms on Hemsby, Norfolk?

30ft of the village, including some houses fell into the sea; 50 more at risk

26

How much did the 2007 floods cost the Uk economy?

£3 billion

27

In summer 2007, rainfall was ...... times the normal amount.

300

28

How many homes in Hull were severely damaged by the 2007 floods?

8,000

29

How many businesses in Hull had to close?

1,300

30

In 2004, how much water flooded Boscastle?

Equivalent of the Thames flowed through the village, funnelled by the valley

31

Why were sluice gates opened at a dam near Rotherham?

Dam threatened to burst, flooding power lines and M1; 30 million of 120 million capacity released; residents of Catcliff downstream thought dam had already burst due to severity of flooding

32

Why is Tewkesbury so vulnerable to flooding?

It lies on the confluence of the Severn and Avon

33

What happened to the abbey in Tewkesbury?

First time flooding since 1770, became an island of 100-150 people

34

How much rain fell over Gloucestershire in 2007?

135mm in 16 hours

35

How much did the water level in the Severn rise by?

6m and the Avon was at its highest level ever recorded

36

What were the secondary impacts of 2007 UK floods?

Thousands of houses without electricity and water supplies due to flooding at sub-station and contamination

37

What were the immediate responses to the 2007 floods?

£87 million emergency aid for schools,transport and business; bottled water distributed

38

What were the long term responses to the 2007 floods?

Plans to increase flood defence spending by £800 million by 2011, afforestation, better home design