What are the characteristics of a volcanic eruption?
Volcano formation Pressure builds up inside the Earth. When this pressure is released, eg as a result of plate movement, magma explodes to the surface causing a volcanic eruption. The lava from the eruption cools to form new crust. Over time, after several eruptions, the rock builds up and a volcano forms.
What is the advantages of living near a volcano?
People choose to live in volcanic areas despite the risks of an eruption. Volcanoes can provide people with many benefits such as: volcanic rock and ash provide fertile land which results in a higher crop yield for farmers. tourists are attracted to the volcano, which increases money to the local economy.
What is the effects of volcanic eruption?
Volcanoes spew hot, dangerous gases, ash, lava, and rock that are powerfully destructive. People have died from volcanic blasts. Volcanic eruptions can result in additional threats to health, such as floods, mudslides, power outages, drinking water contamination, and wildfires.
What is the main volcano in Indonesia?
Mount Merapi
Indonesia’s most active volcanoes are Kelut and Mount Merapi on the island of Java. The majority of Indonesia’s volcano are located on a 3,000 km long chain called the Sunda Arc. Here, the subduction of the Indian Ocean crust underneath the Asian Plate produced most of these volcanoes.
What are the 5 characteristics of a volcano?
The characteristics that identify the different types of volcanoes include their form, size, types of eruptions and even the type of lava flows they produce.
- Fissure Volcanoes.
- Shield Volcanoes.
- Stratovolcanoes.
- Cinder Cone.
- Caldera.
What are the 3 main types of volcanoes and their characteristics?
There are three types of volcanoes: cinder cones (also called spatter cones), composite volcanoes (also called stratovolcanoes), and shield volcanoes. Figure 11.22 illustrates the size and shape differences amongst these volcanoes. Shield volcanoes, which get their name from their broad rounded shape, are the largest.
What are 3 benefits of volcanoes?
“It gives us really fertile soils, which are great for farming and crops.” Volcanoes also provide a good environment for the formation of new habitats for animals, plants and insects, she said. Hot springs and geothermal energy are additional benefits.
What are the advantage and disadvantage of volcanoes?
The advantages (enrich the soil, new land is created, thermal energy, tourist, economy and scenery) and disadvantages (kill people, damage property, habitats and landscapes are damaged) of volcanoes.
What are 3 positive effects of volcanoes?
Volcanoes can provide people with many benefits such as:
- volcanic rock and ash provide fertile land which results in a higher crop yield for farmers.
- tourists are attracted to the volcano, which increases money to the local economy.
- geothermal energy can be harnessed, which provides free electricity for locals.
What are the 3 main causes of volcanic eruptions?
Although there are several factors triggering a volcanic eruption, three predominate: the buoyancy of the magma, the pressure from the exsolved gases in the magma and the injection of a new batch of magma into an already filled magma chamber. What follows is a brief description of these processes.
Why Indonesia has the most number of volcanoes?
The geography of Indonesia is dominated by volcanoes that are formed due to subduction zones between the Eurasian plate and the Indo-Australian plate.
What kind of volcano is in Indonesia?
stratovolcanoes
Most volcanoes in Indonesia consist of stratovolcanoes, but this does not mean that the resulting eruptions are always explosive and they have a long period.