Weather Hazards

Question 1

Tropical storms

Answer 1

Features – Eye
Eye wall - strong winds

Formation
Ocean has to be 27°
Warm air from ocean rises
It then cools condenses and rains
Cold air sinks creating calm eye
Trade winds around equator sucks in warm air causing wind speed

Question 2

Tropical storms case study

Answer 2

Hurricane Katrina
Long term – rebuilt look defences, build houses on stilts
Prediction plan prepare
Responses – residents evacuated, charities provided aid

Question 3

UK weather hazards

Answer 3

Rain
Wind
Snow and ice
Thunderstorms
Hail storms
Heat waves
Drought

Question 4

Weather hazard case study

Answer 4

Somerset floods
Social effects – Villages inaccessible, School is closed, damage to homes
Economic affects – businesses closed, Road/Rail links damaged, economic cost £145 million
Environmental effects – contaminated water and land, damaged habitats and ecosystems, debris littered region
Management strategies – flood plan, roads raised, rivers dredged

Question 5

Global atmospheric circulation

Answer 5

warm air rises from equator creating a belt of low pressure as it rises it cools
The resulting condensation creates clouds and rain the move north and south of the equator
At 30° north and south of the equator the cold dry air sinks creating high-pressure and clear skies
When the sinking a reaches the Earth surface it moves it back to the equator or towards the poles
When the sinking a reaches the Earth surface it moves either back to the equator or towards the poles at 60° north and south of the equator the surface there meets cold air from the polls which causes it to rise creating a belt of low pressure
The air rises and cools. at a high level this move either to equator or towards the poles
At Poles the cool air sinks to earths surface this creating high-pressure air then moves back towards the Equator