3.1.5.5 Storm hazards Flashcards
1
Q
How does a tropical storm form
A
- sea temperatures of over 27 degrees
- ocean depth of more than 70m
- convergence of air in the lower atmosphere
- rapid outflow of air in the upper atmosphere
2
Q
What are the four names for tropical storms
A
- hurricanes (North America)
- cyclones (South Asia)
- typhoons (East Asia)
- willy-willies (Oceania)
3
Q
Where are tropical storms most common
A
East Pacific and East Asia
4
Q
How is the magnitude of tropical storms measured
A
Saffir-Simpson scale on a 5 point system
5
Q
Why is it difficult to predict a tropical storm
A
They have an erratic path
6
Q
How do you protect against a tropical storm
A
- ensure drills are practiced
- land use planning
- insurance
7
Q
When was hurricane Katrina and what category was it
A
2005, category 5
8
Q
Physical features of hurricane Katrina
A
- 200km/h winds
- 8.5m storm surge
- 250mm rainfall
9
Q
Social impacts of hurricane Katrina
A
- 1800 died
- 300,000 houses destroyed
- polluted water supplies
10
Q
Economic impacts of hurricane Katrina
A
- 230,000 jobs lost
- cost $300bn
11
Q
Environmental impacts of hurricane Katrina
A
- flooding of salt marshes damaged habitats
- oil spills
12
Q
Immediate responses to hurricane Katrina
A
- sophisticated warning system kept people informed
- this led to 80% evacuated from New Orleans
- emergency shelters for 25,000
13
Q
Long term responses to hurricane Katrina (economic)
A
- $4bn in aid
14
Q
When did typhoon Haiyan hit Philippines
A
2013
15
Q
Physical features of typhoon Haiyan
A
- winds up to 300km/h
- 5m storm surges
