Tectonics
Describe the distribution of earthquakes,volcanoes and fold mountains in relation toplate margins.
Describe the causes and effects ofearthquakes and volcanic eruptions
Constructive, e.g. Mid Atlantic Ridge;
Destructive, e.g. South America;
Conservative e.g. San Andreas.
Types of plate boundary
PPTplate2
PPTplate4
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Shield volcano
Types of volcano
Advantages
Fertile soils
Geothermal power
Tourism
diamonds
Disadvantages
Death!!
Lava flows,pyroclastic flows,lahars, ash fall
Climate change
Loss of income andfarm land
Loss of houseing
Impact of volcanoes on people
Mount Etna
The fertile volcanic soils support extensiveagriculture with vineyards and orchards spreadacross the lower slopes of the mountain and thebroad Plain of Catania to the south.
They can generate electricity from the volcanousing geothermal power;
The volcano attracts tourists and residents ofnearby Messina and Catania earn money fromrenting accommodation   to tourists;
The Italian government have invested money inprediction and they are willing to take the risk
The height of the volcano gives snow, - skiing
Measured on the Richter scale;
Primary effects include collapsed buildings;
Secondary effects include gas fires, diseaseand tsunamis
Earthquakes
More deaths occur in LEDCs;
Greatest financial loss occurs in MEDCs;
More deaths occur in urban areas;
The time of day is important.
Effects of tectonic activity
Poor quality buildings/infrastructure/roads/bridges;
   which easily collapse;
As building regulations are not enforced;
High population densities;
Poor medical services/hospitals/get destroyed;
Therefore people cannot be properly treated for theirinjuries;
Lack of planning/emergency procedures/emergencyshelters/level of preparation;
Poor education eg earthquake precautions;
Lack of money for re-building/assistance/rescue; etc.
Why difference in countries?
Los Angeles, USA,interplate 17 Jan 1994
4.31 am
6.6
47 dead
20,000+, in tents
2,300 Injured
Points to note
Fires, water, housingInfrastructure , FEMA,economy
Maharashtra, India,intraplate  30 Sept, 1993
4.00 am
6.4
22,000 dead
10,000+, in anything
4,800
Points to note
Housing, disease , water,rescue 36 hours after byscouts, by hand
Case study: Earthquakes
Fold mountains
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The main activities in the Alps are connectedwith:
Tourism;
dairy farming;
Forestry;
HEP;
and industry.
Living in the fold mountains
These include
Climate;
Transport;
Farming;
Industry;
and low population density
Problems of fold mountain areas