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36 Cards in this Set
- Front
- Back
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Define natrual hazard |
Sudden severe events that make the natrual enviroment hard to manage |
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Define hazard risk |
The chance of being affected my a natural hazard |
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4 factors that affect risk |
Urbanisation Poverty Farming Climate change |
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Define the global pattern of earthquakes |
Margins of slow moving tectonic plates - friction and sticking of plates |
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Define the pattern of volcanoes |
Destructive plate margins |
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Two types of crust, which is denser? |
- oceanic, dense - continental, thick |
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Tell me about the constructive margin |
Two plates move apart, magma forces up To the surface |
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Destructive margin |
Two plates move towards eachother oceanic is subducted underneath continental. Pressure pushes magma up. |
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Conservative margin |
Two plates move in opposite directions next to eachother and rub. |
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Why do people still live with the risk of tectonic hazards. |
No knowledge of risk No choice Family |
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How tectonic activity in iceland brings benefits? |
Natrual hot water Geothermal energy Tourism |
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Monitoring methods volcano |
Remote sensing Seiamicity Ground deformation |
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Monitoring methods earthquake |
Bulging ground Microquakes |
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Whay does Prediction for volcanoes do? |
Effective evacuation |
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Prediction for earthquakes? |
Impossible, apart from historical records. |
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Protection for volcanoes |
**** all |
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Protection for earthquakes |
Earthquake drills |
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Planning for volcanoes |
Risk assesment / hazard mapping |
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Planning for earthquakes |
Risk assesment / hazard mappinh |
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How does global atmospheric work? |
Air movements called cells Sinking air = high pressure Rising air = low pressure Winds curve cuz of earth rotation. Change seasonally because of position of earth relative to sun. |
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Affects of GAC on UK |
Wet in UK polar meets subtropical air, condeses. |
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Affects of GAC on deserts |
Hot and dry Sinking air = high pressure Hot day time, cold night time. |
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Affects of GAC on equator? |
Low pressure, rising himid air condeses and rains down. |
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Whats a tropical storm |
Big storms called hurricanes, tphoons or cyclones in different parts of the world. |
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Where do they form |
27 degrees in ocean High rotation Unstable air |
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How do they form |
Rising air draws up water, condenses into rain clouds. Condensing releases energy, powers up storm, more water is drawn up. Loads join together Eye forms Prevailing winds power up storm |
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Structure of a storm? |
Eye, calm. Eye wall - strong winds heavy rain. Beyond wall - further banks of cloud, ocasional tornadoes. |
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How will climate change affect tropical storms? |
Incresed sea temperitures Extend to the south antlantic More power |
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Monitoring tropical storms |
Satilite tracking |
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Tropical storms protection |
Reinforced walls Cyclone shelters |
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Planning for tropical storms |
Raise awarness, quicker responses. |
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What are the UK's weather hazards? |
Thunderstorms Prolonged rainfall - flooding Extreme heat - dry up resovoirs Heavy snow - traffic Strong winds - power supplies |
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Why does it occur in the UK |
Its roundabout location |
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Is the UK's weather getting more extreme? Getting stuck? |
Yes - more energy in atmosphere Yes getting stuck. Jet streams getting stuck for long periods of time. |
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What is the evidence for climate change since quaternary. |
Found a rise in temperiture by looking at oxygen in rocks. |
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Recent evidece for climate change? |
Rising sea level Melting ice caps |
