Weather hazards

Question 1

Global atmospheric circulation model
2 things

Answer 1

Pressure belts
Surface winds

Question 2

Pressure belts

Answer 2

The air at the equator is strongly heated - rises -low pressure - moves further north and south
It cooled and condense - high pressure- rain and clouds
It condenses 30 degrees north and south of the equator- high pressure-clear skies

At polar latitudes cooler denserair sinks - high pressure- flows towards the equator
Beats to 60 and rises - low pressure

Question 3

3 cells

Answer 3

Hadley
Ferrel
Polar

Question 4

Surface winds

Answer 4

Wind happens when air goes from high to low pressure
Bends sue to the Coriolis effect
Right to nothern hemisphere
Left to southern hemisphere

Question 5

Global distribution of storms

Answer 5

Between 5-30 n ands
Low pressure as air rises
Oceans about 27 degrees and 60-70 m deep
Sheer winds so they can rise to altitudes without being torn apart
Coriolis effect means they are strong enough to spin

Question 6

Sequence of the formation of tropical storms

Answer 6

Air is heated above the surface if a warm tropical ocean
Rises rapidly under low pressure
Strong winds form as rising air draw up more air and moisture
Spins round calm central eye of storm
Sue to Coriolis effect
The rising cools and condenses, forming large clouds and torrential rainfall.
Heat is given off as it cools power in the tropical storm
Cold air sinks in the eye, so it is clear, dry and calm
Tropical storm travels across the ocean with the prevailing winds
On meeting land loses its source of heat and moisture so it loses power

Question 7

How climate change affects weather hazards

Answer 7

distribution-the location is not expected to change significantly more areas where C surface temp will increase example subtropics
Frequency-will stay the same or decrease the category five and four will increase while category one and 3 will decrease
Intensity-since 1970, more intense storms increase

Question 8

Case study

Answer 8

Typhoon
Haiyan