Anzueth

Volcanoes

-How volcanoes are formed
Volcanoes are usually formed around area on the earth where the tectonic plates are. The plates crack and magma comes flowing out through the crust. The magma hardens and forms layers. The layers then form a volcano.
-How lava is formed
Deep in the earth there is a mantle. The mantle melts and moves through thin pieces of the crust. The crust then releases hot ash and rock. After the hot ash and rock are through the magma comes out of cracks in the crust.
- Melting rocks
Extremely high pressure causes the mantle to melt. There are different types of magma. Such as: Mafic which is rich and dark lava, and. Felsic which is lava that consists of feldspars. Also intermediate. Mafic hardens into a dark igneous rock, Intermediate into a dark colored volcanic rock, and Felsic into a light gray hard rock.
-Volcanic Hazards
Volcanoes have a lot of hazards. First poisonous volcanic ash fills the air. Second Landslides form and they destroy structures. Then flowing lava can also destroy structures and kill people. Lastly the volcano can collapse.
-Types of volcanoes
There are many different types of volcanoes. The first type is a shield volcano. A shield volcano is a large volcano it has a broad summit and low sloping areas. Next is Cinder Cone volcano. A cinder cone has mounds of basaltic fragments, it carries liquid blobs of lava then they get spurt out and rain and form a cone shape. The last type is a strato volcano. They are built by multiple eruptions. They stand higher than cinder cones.
-Volcanoes form in different ways
Volcanoes erupt in different ways because it depends on what plate they form on. If a volcano is on a hot spot then the lava forms a chain. If the plates collide the lava tends to explode out. When the plates are separating the lava comes out smoother and it flows down.
-Can we predict when a volcano is going to erupt?
We can predict when a volcano is going to erupt. Before a volcano erupts smoke and ash come out of the volcano. So by that happening we know that lava is coming next. Scientists are beginning to use tools that can record these warnings. The problem is though that it is very hard to know exactly when the volcano is going to erupt.
- Preparedness for the future
Before we build structures we should think, is there a volcano nearby? Also people who live near a volcano should be educated about what a volcano hazards. There should be communication between scientist and the officials. Emergency plans should be thought out and agreed to.