i need with this natural disasters question. more details will be great. 1. Desc
ID: 113790 • Letter: I
Question
i need with this natural disasters question. more details will be great.
1. Describe all of the three plate boundaries as to what is happening as shown in the following illustration:
Transform Plate Boundary:
Divergent Plate Boundary:
Convergent Plate Boundary:
2.
2. Explain the type of volcano that is found in the plate tectonic boundaries in the above illustrations for questions 1, 2, and 3 (and picture shown above of Mt. Pinatubo erupting and how and why they behave explosively addressing each of the following reasons as they apply to this type of volcano at convergent plate boundaries:
Why are there High volatiles content (gases)?
Why is there Lower Temperature High viscosity Magma (thick sluggish magma)?
Why are there High volumes and quantity of magma and repetitive eruptions over time?
Transform fault Juan de Fuca Ridge Juan de Fuca plate regon California Pacific plate Mendocino © 2012 Pearson Education, Inc.Explanation / Answer
The first is transform plate boundary. This the resultant when two plates are sliding to the sides. During this process the plate breaks and slides and this results in grinding of the layers of each plate.
Divergent plate is when the two plates as shown above are separated from each other. That means they are dividing.
Convergent boundaries are when the plates in the above illustration are moving into each of them. That means they are moving close together.
During the divergence rifts are formed and during convergence subduction zones are formed.
As the convergence takes place, the magma is pushed out or squeezed and the pressure build up takes place.
The volcanic gases increase with the increase in the pressure and heat. Thus during an eruption high volatile gases are released.
During the process of rifting the hot lava tries to reach the places with low pressure. In this process the lava gets cooled and the viscoity remains high. This causes sluggish magma.
As the volcanic gases increase in volume and the structure of the volcano is feasible, eruptions take place repeated.
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