Question

there are type of vocanoes on the basic of mode​

Answer 1

Answer:

There are three main types of volcano - composite or strato, shield and dome. Composite volcanoes, sometimes known as strato volcanoes, are steep sided cones formed from layers of ash and [lava] flows.

Answer 2

Answer:

Types of Volcanoes

Volcanoes are grouped into four types:

Cinder cones

Composite volcanoes

Shield volcanoes

Lava volcanoes

Cinder Cones

Cinder cones are circular or oval cones made up of small fragments of lava from a single vent that have been blown up. Cinder cones result from eruptions of mostly small pieces of scoria and pyroclastics that build up around the vent.

Composite Volcano

Composite volcanoes are steep-sided volcanoes composed of many layers of volcanic rocks, usually made from high-viscosity lava, ash and rock debris. These types of volcanoes are tall conical mountains composed of lava flows and other ejecta in alternate layers, the strata that give rise to the name.

Shield Volcano

Shield volcanoes are volcanoes shaped like a bowl or shield in the middle with long gentle slopes made by basaltic lava flows. These are formed by the eruption of low-viscosity lava that can flow a great distance from a vent.

Lava Domes

Lava domes are formed when erupting lava is too thick to flow and makes a steep-sided mound as the lava piles up near the volcanic vent. They are built by slow eruptions of highly viscous lava.

Types of Volcanic Eruptions

Types of volcanic eruptions depend on various factors such as chemistry of magma, temperature, viscosity, volume, presence of groundwater, and water and gas content.

Following are the different types of volcanic eruptions:

Hydrothermal eruption: These eruptions include ash and not magma. They are driven by the heat caused in hydrothermal systems.

Phreatic eruption: This is driven when the heat of the magma interacts with the water. These eruptions to do not include magma and only ash.

Phreatomagmatic eruption: This eruption takes place when there is the interaction between the newly formed magma and water.

Strombolian and Hawaiian eruption: Hawaiian eruption has fire fountains while the Strombolian eruption has explosions due to lava fragments.

Vulcanian eruption: These eruptions last for a short period of time and can reach up to a height of 20 km.

Subplinian and Phinian eruptions: Subplinian eruptions reach up to 20 km height, while Plinian eruptions reach up to 20-35 km.

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