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GCSE Geography Case Studies > Hurricane Katrina > Flashcards

Hurricane Katrina Flashcards

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1
Q

How much did hurricane katrina cost USA?

A

$200 billion

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2
Q

How large was the area it affected?

A

90,000 square miles

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3
Q

How many times did it make landfall?

A

3

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4
Q

Which part of USA was most notably affected by katrina?

A

New Orleans

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5
Q

Where did katrina form?

A

About 200 miles south east of the Bahamas

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6
Q

When did katrina form?

A

23rd August 2005

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7
Q

What did katrina form as?

A

A tropical depression

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8
Q

Name 3 features of a tropical depression

A
  • low pressure system
  • thunderstorms
  • wind speed between 25-35mph
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9
Q

How hot was the ocean when katrina formed?

A

26.5*C

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10
Q

What type of winds spiralled into the storm? Why was this?

A

Trade winds spiralled into the storm due to the rotation of the earth

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11
Q

What are trade winds?

A

Wind blowing towards the equator

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12
Q

Which tropic was katrina formed close to?

A

The Tropic of Cancer

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13
Q

What formed the storm clouds?

A

Evaporated ocean water, warming and rising

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14
Q

Why were trade winds absorbing moisture from the ocean?

A

Pressure was very low, sucking in air from the trade winds to spiralling winds that absorb moisture from the ocean

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15
Q

When did bands of storm clouds begin to wrap around the North side of the storms circulation centre?

A

Early morning hours of 24th of August

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16
Q

What were the constant wind speeds of katrina?

A

40mph

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17
Q

When did katrina hit Florida?

A

25th August

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18
Q

What happened when katrina hit Florida?

A

It strengthened and became a moderate category 1 hurricane

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19
Q

Name 2 impacts when katrina hit Florida

A
  • flooding

* casualties

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20
Q

How many people died when katrina hit Florida?

A

2

21
Q

What happened to katrina as it passed over land? Why?

A

It weakened because it lost its power source, the warm water as it is over land

22
Q

Why did the storm intensify when back over the sea? When did this happen?

A

Moist air cools and condenses releasing energy

This happened on the 26th August 2005

23
Q

When did katrina become a category 5 hurricane?

A

28th August 2005

24
Q

How fast were winds blowing when katrina was at its peak?

A

175mph

25
Q

What was the pressure when katrina was at its peak?

A

902mb

26
Q

When did katrina hit New Orleans?

A

6.10am on 29th August 2005

27
Q

Where in New Orleans did katrina hit?

A

The eastern edge

28
Q

What category hurricane was katrina when it hit New Orleans?

A

Category 3

29
Q

What scale measures the intensity of hurricanes?

A

Saffir Simpson

30
Q

What is the nhc?

A

National hurricane centre

31
Q

What did the nhc do?

A

Tracked the storm and issued warnings

32
Q

What does USA have to track hurricanes?

A

Sophisticated monitoring systems like satellites and hunter planes which fly into storms

33
Q

How did US coast guards make preparations?

A
  • called in reserves

* recalled aircraft to base

34
Q

When did president bush declare state emergency?

A

27th August 2005

35
Q

What did the national weather service do?

A

Predict devastating damage on 28th August

36
Q

When were evacuation orders given out to New Orleans? For how many people?

A

28th August for 1.2 million people

37
Q

How many people per hour evacuated New Orleans?

A

18,000 per hour

38
Q

Where were emergency centres set up for those who couldn’t/chose not to evacuate?

A

Louisiana superdome

39
Q

Name 6 primary impacts of hurricane katrina

A
  • 125mph winds up to 120 miles from the centre of the storm
  • heavy rain: 250mm
  • 3 million lost electricity
  • housing was flooded
  • roads damaged
  • 2 major bridges collapsed
40
Q

Name Secondary impacts

A
  • 1836 died of drowning

* public transport out of action

41
Q

Why was response more difficult?

A

Widespread flooding

42
Q

Why was there an increased risk of disease?

A

The water supply was contaminated and many were stranded with no food or water

43
Q

How did volunteers help?

A

•provide emergency housing

44
Q

How many people were rescued in total? Who by?

A

50,000 by air, police, helicopter and army

45
Q

How many national guard helped preserve law and order, rescue and clean up?

A

58,000

46
Q

How much money was authorised for aid victims by U.S. Government?

A

$62 billion

47
Q

What were provided to live in?

A

Caravans

48
Q

How many countries pledged financial aid to USA?

A

70

49
Q

What plans were put in place after katrina?

A

Plans to strengthen flood defences in New Orleans

GCSE Geography Case Studies (12 decks)

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