Living With Tectonic Hazards Flashcards
why might natives of an area not want to move away from a volcano if they live near one
- because they have always lived there
- moving away means leaving friends and family
why might someone with a job not want to move away from a volcano if they live near one
- they are employed in the area
- so if they moved they would have to find new jobs
why might someone choose to live near a volcano if they are confident in their government
- they trust them to act appropriately
- such as rebuilding houses and supplying resources
why might some people living near volcanoes choose to stay there if an eruption happened before
because they believe tat severe earthquakes or eruptions wont happen again in the area
why might a farmer want to live near a volcano
- the oil around volcanoes is fertile because its full of minerals from volcanic ash and lava
- this makes it good for growing crops which attracts farmers
why might someone looking for work in the tourist industry live near a volcano
- volcanoes are tourist attractions
- lots of them visit volcanoes
- so many people live around volcanoes to work in the tourist industry
why would you want to have a management strategy in case a natural disaster hits
because they reduce the number of people killed, injured, made homeless or made unemployed
how does monitoring work as a management strategy
- networks of seismometers and lasers monitor earth movements
- and can be used in early warning systems to give a small but vital amount of warning before a large eruption occurs
why can warnings be raised through monitoring the earths movements
- scientists monitor the tell tale signs that come before a volcanic eruption
- such as tiny earthquakes, escaping gas and changes in the shape of the volcano
- like bulges in the land where magma has built up under it
how does prediction work as a management strategy
- earthquakes cannot be reliably predicted
- but by monitoring the movements of tectonic plates
- scientists can forecast which areas should be prepared for one to occur
when can volcanic eruptions be properly predicted and what could it lead to
- they can only be predicted if the volcano is well monitored
- predicting when it will erupt gives people time to evacuate
- this reduces the number of injuries and deaths
how does protection work as a management strategy
- buildings can be designed to withstand earthquakes
- by using materials like reinforced concrete or building foundations that absorb an earthquakes energy
how could existing buildings be strengthened against earthquakes and volcanoes and why would you do this
- by wrapping pillars in steel frames
- so they are less likely to collapse under the weight of falling ash
- or due to shaking from an earthquake
what is a more advanced way of protecting people in the event of s natural disaster
- automatic shut off switches can be fitted
- that turn off gas and electricity supplies
- to prevent fires if an earthquake id detected by a monitoring system
how does planning work as a management strategy
- future developments can be planned to avoid t he areas most at risk from tectonic hazards
- emergency services can train and prepare for disasters
- like practising rescuing people from collapsed buildings or setting up shelters
- this will reduce the number of people getting killed
