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Characteristics of tropical storms:

spin anticlockwise

circular in shape, 100s of km wide

7-14 days

eye = low pressure, no clouds, no rain & light winds

eyewall = spiralling rising air, strong winds (160km/h), storm clouds, torrential rain

towards the edges of the storm the wind speed falls, clouds are smaller and more scattered, and rain becomes less intense

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Reducing the impacts of tropical storms:

predictions = when and where, gives people time to evacuate

planning = new houses built to avoid risky areas, emergency services trained and prepared, evacuation routes planned

building techniques = buidlings designed to withstand storms (strengthened and on stilts), flood defences built along rivers

education = how to prepare and evacuate, told how to make a survival kit

aid = sent to reduce impacts e.g food, water & tents

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Climatic conditions that cause drought:

changes in atmospheric circulation reduce rainfall, high pressure ssytems block depressions (which would cause precipitation)

Secondary impacts of drought:

animals die from starvation, shortage of food, soil erosion increased, conflicts over water supplies, farms close, dust storms, psychological problems

More severe in LEDCs because:

more people depend on farming = lose livelihoods

less money to prepare for or respond to droughts e.g cant afford to build reservoirs

To reduce impacts:

prediction, farming techniques, water conservation, increase water supplies and aid

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