3.1.5.5 Storm Hazards Flashcards

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1
Q

what is a tropical storm

A

huge spinning storm with winds up to 250km/h and torrential rain

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2
Q

characteristics of a tropical storm

A

circular
hundreds of metres wide
last up to two weeks

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3
Q

where do tropical storms develop

A

over warm water +27 degrees c
within the tropics (23oN, 23oS)
water over 50m deep

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4
Q

how do tropical storm form

A

as warm, moist air develops over oceans it cools and condenses to form tall storm clouds
as warm air rises, cooler air is drawn towards the centre of low pressure. This air convergence forces the rising warm air upwards

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5
Q

what is the coriolis effect

A

A force caused by the earths rotation

It deflects the path of the converging winds to rotate

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6
Q

When do tropical storms lose energy

A

When they make landfall and the supply of moist air is cut off

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7
Q

What are the types of storm hazards

A
High winds
Storm surges
Heavy rain
Flooding
Landslides
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8
Q

What are tropical storm called in the carribean

A

Hurricanes

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9
Q

What are tropical storms called in the indian ocean

A

Cyclones

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10
Q

What are tropical storms called in the china sea

A

Typhoons

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11
Q

Where is the coriolis effect weak and what does it mean

A

At the equator

It means that tropical storms dont form between 0-5° of the equator

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12
Q

What is storm magnitude classified by

A

Saffir-Simpson Scale

Based on windspeed

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13
Q

How often do tropical storms occur

A

Frequent - 100 a year

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14
Q

Why can storms be tracked and predicted better now

A

Satellite imagery

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15
Q

Social impacts of a tropical storm

A

People drown
People are left homeless
Power supplys cut off
Agricultural land damaged

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16
Q

Economic impacts of a tropical storm

A

Huge costs in rebuilding businesses and homes

17
Q

Political impacts of tropical storms

A

Authorities blamed for shortages of food

Expensive repairs can hinder a countries development

18
Q

Environmental impacts of a tropical storm

A

Beaches eroded and coastal habitats destroyed
Environments are polluted e.g. Salt water
Landslides block rivers, changing their course