Geography 1A- Weather Hazards

?
What are winds?
Large scale movements of air caused by difference in air pressure
1 of 69
What are differences in air pressure caused by?
Differences in temperatures between the equator and the poles
2 of 69
Which direction do winds moves from and to?
From high pressure to low pressure
3 of 69
What happens to air at the equator?
It rises which leads to low pressure
4 of 69
What happens when the risen air reaches the edge of the atmosphere?
It becomes cold and falls to create high pressure and dry conditions
5 of 69
What latitude does that happen at?
30 degrees north and south
6 of 69
What latitude does air rise up again at?
60 degrees north and south
7 of 69
What latitude does air descend again at?
90 degrees north and south
8 of 69
What conditions are needed for a tropical storm to form?
Sea temperature of 27 degrees or high and when the wind shear is low
9 of 69
What is wind shear?
Difference in windspeed
10 of 69
What makes a tropical storm powerful?
The warm air rises and condenses which releases energy
11 of 69
What does the rising air create?
An area of low pressure which increases surface winds
12 of 69
Which direction do tropical storms move in and why?
Towards the west because of the easterly winds
13 of 69
What causes the storm to spin?
The earth's rotation deflects the path of winds
14 of 69
Where does wind speeds lose strength?
When they move over land or cooler water because energy supply is cut off
15 of 69
Where do most tropical storms occur between?
5 to 30 degrees north and south
16 of 69
What direction do tropical storms spin?
Anticlockwise in northern hemisphere and clockwise in the southern hemisphere
17 of 69
What is the centre of the storm called?
The eye
18 of 69
What is the climate like in the eye?
Low pressure, light winds, no clouds, no rain and a high temp
19 of 69
What is the eye surrounded by?
Eyewall
20 of 69
What is the climate like in the eyewall?
Strong winds, storm clouds, torrential rain and low temp
21 of 69
What is the climate like towards the edges of the storm?
Wind speed falls, clouds become smaller and more scattered and the rain becomes less intense and temp increases
22 of 69
How will temperature affect tropical storms?
More tropical storms and stronger storms
23 of 69
What is the first primary effect of a tropical storm?
Roads, railways and bridges are destroyed
24 of 69
What is the second primary effect of a tropical storm?
Sewage overflows and contaminates water supplies
25 of 69
What is the third primary effect of a tropical storm?
People drown or injured by debris
26 of 69
What is the first secondary effect of a tropical storm?
Shortage of food if crops are damaged, livestock are killed
27 of 69
What is the second secondary effect of a tropical storm?
Roads are blocked or destroyed so aid can't get through
28 of 69
What is the third secondary effect of a tropical storm?
Business are damaged or destroyed causing unemployment
29 of 69
What is the first immediate response to a tropical storm?
Set up temporary shelters who's people have been damaged
30 of 69
What is the second immediate response to a tropical storm?
Provide temporary supplies of water, food, electricity, gas and communication systems
31 of 69
What is the third immediate response to a tropical storm?
Recover any dead bodies to prevent the spread of disease
32 of 69
What is the first long term response to a tropical storm?
Improve forecasting techniques to give people more warning
33 of 69
What is the second long term response to a tropical storm?
Provide aid, grants or subsidies to residents to repair and strengthen homes
34 of 69
What is the third long term response to a tropical storm?
Promote economic recovery to encourage people to return to the area
35 of 69
When and where did Hurricane Katrina strike?
Mississippi and Louisiana in August 2006
36 of 69
What is the first primary effect of Hurricane Katrina?
More than 1800 people were killed
37 of 69
What is the second primary effect of Hurricane Katrina?
300,000 houses were destroyed
38 of 69
What is the third primary effect of Hurrican Katrina?
80% of New Orleans was flooded
39 of 69
What is the first secondary effect of Hurricane Katrina?
Hundreds of thousands of people were made homeless
40 of 69
What is the second secondary effect of Hurricane Katrina?
230,000 jobs were lost
41 of 69
What is the third secondary effect of Hurricane Katrina?
The total cost of the damage was estimated at $150 billion
42 of 69
What is the first immediate response to Hurricane Katrina?
70-80% of New Orleans residents were evacuated before it reached land
43 of 69
What is the second immediate response to Hurricane Katrina?
The coastguard, police, fire service and army rescued over 50,000 people
44 of 69
What is the third immediate response to Hurricane Katrina?
Charities collected donations and provided aid, including millions of hot meals
45 of 69
What is the first long term response to Hurricane Katrina?
Us gov provided 16billion dollars for rebuilding
46 of 69
What is the second long term response to Hurricane Katrina?
The US army recommended that buidings are rebuilt on stilts
47 of 69
What is the third long term response to Hurricane Katrina?
Repairs and improved flood defences costing 14.5billion were completed in 2013
48 of 69
How does prediction reduce the effect of tropical storms?
Data from things like radar, satellite and aircraft to monitor storms
49 of 69
How does planning reduce the effect of tropical storms?
Future developments can be planned to avoid areas most at risk
50 of 69
How does protection reduce the effect of tropical storms?
Flood defences built along rivers and coasts, leeves and sea walls
51 of 69
What can too much rain cause?
Flooding
52 of 69
What can strong winds cause?
Damage properties and cause disruption to traffic
53 of 69
What can snow and ice cause?
Injuries and major disruption
54 of 69
What can thunderstroms cause?
Lightning can cause fires with heavy rain and winds
55 of 69
What can hailstorms cause?
Driving dangerous and crops/property
56 of 69
What can heatwaves cause?
Death or breathing difficulties and roads melting
57 of 69
What can drought cause?
Water supplies run low causing crops to fail and conserving water
58 of 69
What months in the Uk were really cold?
November and December 2010
59 of 69
Why was it so cold?
Cold air from northern Europe and Siberia
60 of 69
What was the first social impact of the cold?
Several people died from hypothermia
61 of 69
What was the second social impact from the cold?
40,000 homes left without water
62 of 69
What was the first economic impact?
Transport disrupted, GDP decreased by 0.5%
63 of 69
What was the second economic impact?
GDP decreased by 0.5%
64 of 69
What was the first environmental impact?
Snow covered almost all of UK
65 of 69
What was the seconf environemental impact?
Damaged crops especially sugar beet
66 of 69
How can prediction reduce risk of cold weather?
Give people time to prepare
67 of 69
How can protection reduce risk of cold weather?
Council stocked up on gritters and salt supplies
68 of 69
How can planning reduce risk of cold weather?
Emergency services and councils planned how to deal. E.g. close schools
69 of 69

Other cards in this set

Card 2

Front

What are differences in air pressure caused by?

Back

Differences in temperatures between the equator and the poles

Card 3

Front

Which direction do winds moves from and to?

Back

Preview of the front of card 3

Card 4

Front

What happens to air at the equator?

Back

Preview of the front of card 4

Card 5

Front

What happens when the risen air reaches the edge of the atmosphere?

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Geography resources:

See all Geography resources »See all Weather and climate resources »