Explain the destructive as well as constructive effects of volcanoes?
Answers
Answered by
6
Volcanic impacts are more hazardous near destructive margins than constructive ones. Discuss.
I agree that volcanic impacts are more hazardous near destructive margins than constructive ones.
Destructive margins occur where continental and oceanic plates converge together or oceanic and oceanic plates converge together. For the former, the continental crust has a rock density much lower than the oceanic crust. As these two plates meet the oceanic crust is submerged underneath the continental crust, as it is denser. This causes a subduction zone to form where deep sea trenches result. As the oceanic plate is submerged, it begins to melt due to increased heat and friction. The melting of the plate results in magma building up, which eventually rises up to the surface as volcanoes. As for the later, the denser plate will be subducted and some of the magma will rise through fractures in oceanic crusts and pour onto ocean floor, forming undersea volcanoes. If the magma forces its way up on offshore, then ‘island arcs’ form. The West Indies and Japan are two examples of island arcs.
I agree that volcanic impacts are more hazardous near destructive margins than constructive ones.
Destructive margins occur where continental and oceanic plates converge together or oceanic and oceanic plates converge together. For the former, the continental crust has a rock density much lower than the oceanic crust. As these two plates meet the oceanic crust is submerged underneath the continental crust, as it is denser. This causes a subduction zone to form where deep sea trenches result. As the oceanic plate is submerged, it begins to melt due to increased heat and friction. The melting of the plate results in magma building up, which eventually rises up to the surface as volcanoes. As for the later, the denser plate will be subducted and some of the magma will rise through fractures in oceanic crusts and pour onto ocean floor, forming undersea volcanoes. If the magma forces its way up on offshore, then ‘island arcs’ form. The West Indies and Japan are two examples of island arcs.
Answered by
4
Explanation:
☆the constructive effects of volcanoes are:-
•extrusive forms are formed by the land solidification of Lava on the surface of land
•intrusive forms are those which are formed by the solidification of Lava on the surface of the earth
☆the destructive effects of volcanoes are:-
• volcanic eruption are a hazard of life and property
• well conic eruption release gas and smokes which cause air pollution and can adversely affected on ozone layer
hope it help you mark as friend
Similar questions