At a constructive margin the Earths crust is forced apart and new crust is created at the boundary. This proces is known as sea-floor spreading. It occurs in the mid-Atlantic where the North and southerly American plates argon being pulled apart from the Eurasian and African plates by convection cells. When the plates diverge magma rises and solidifies to create a new pelagic crust and forms a mid-ocean ridge. The magma forms submarine volcanoes which might grow preceding(prenominal) sea-level forming new islands.
The largest visible product of constructive divergent plates is Iceland where one-third of the lava emitted onto the Earth’s surface in the pass away 500 years can be found.
Volcanic employment in these areas are a great danger for humans. The driveway of the plate margins create earthquakes that can destroy buildings and bury mess under them. Also people can simply regress down to the cracks created by the earthquake. Also volcanoes which are still alive(p) may erupt.
People can die by the atrocious gases created by th eruption or from the extremely anxious lava that f totallys along the volcano.
Volcanic activity can withal cause huge waves from the sea which can drown thousands of people.
thither are strategies made to miminize the risks in volcanic areas. First of all the settlements should be reinforced enough far away from zones where are still active volcanoes. In places like Iceland, the settlements should be built strong and flexible to prevent damage from earthquakes. Also centres which blot even the weakest earthquakes are used so precautions can be made if there seems to be any movement on the ground.If you want to get a full essay, order it on our website: Ordercustompaper.com
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