Question: Which Volcanic Type Is The Most Explosive?

What are the 3 types of volcano?

This is the famous “3 types of volcanoes” (shield volcanoes, strato volcanoes, and cinder cones), and it is found in many textbooks from elementary school to college..

Which volcanoes are more likely to explode thick lava or thin lava?

Which volcanoes are more likely to explode, the ones with thick lava or thin? Why? What evidence do you have? The thick lava because the thick lavas creaters are smaller and don’t have enough air, so when the bubbles float up to the top there will be too,much bubbles.

What does lava look like?

Lava (magma that has erupted onto the Earth’s surface) is visually mesmerizing – as the molten rock flows downhill, lava exposed to the air cools to a deep black color, while the molten rock beneath glows bright orange. Magma is extremely hot liquid and semi-liquid rock located under Earth’s surface.

Which type of volcano is the most explosive?

StratovolcanoesStratovolcanoes are considered the most violent. Mount St. Helens, in Washington state, is a stratovolcano that erupted on May 18, 1980.

What type of volcano has no lava?

Cinder Cone VolcanoesCinder Cone Volcanoes An easily recognized type of volcano is the cinder cone. As you might expect from the name, these volcanoes consist almost entirely of loose, grainy cinders consisting typically of basaltic and andesitic material and almost no lava.

Is Taal a shield volcano?

There are actually three types of volcanoes namely shield, cinder and composite cones. The shield cone looks like an inverted semi-sphere. … One example of that is Taal Volcano, a small volcano located in an island at Batangas, Philippines.

Where is the Ring of Fire?

Pacific OceanThe Ring of Fire (also known as the Rim of Fire or the Circum-Pacific belt) is a major area in the basin of the Pacific Ocean where many earthquakes and volcanic eruptions occur.

What types of volcanoes are explosive?

Composite volcanoes are tall, steep cones that produce explosive eruptions. Shield volcanoes form very large, gently sloped mounds from effusive eruptions. Cinder cones are the smallest volcanoes and result from accumulation of many small fragments of ejected material.

What is the least explosive type of volcano?

basalt plateauThis classification is based on the geomorphic form, magma chemistry, and the explosiveness of the eruption. The least explosive type of volcano is called a basalt plateau. These volcanoes produce a very fluid basaltic magma with horizontal flows.

What are the two most explosive eruption types?

There are two types of eruptions in terms of activity, explosive eruptions and effusive eruptions. Explosive eruptions are characterized by gas-driven explosions that propels magma and tephra. Effusive eruptions, meanwhile, are characterized by the outpouring of lava without significant explosive eruption.

Why is the stratovolcano the most dangerous?

Of all the volcanoes on Earth, stratovolcanoes are the most dangerous. They can erupt with little warning, releasing enormous amounts of material. … As we saw with Mount Saint Helens, they can blast out material from the side, creating pyroclastic flows the hurtle down the volcano’s flanks at enormous speeds.

What is the difference between magma and lava?

Scientists use the term magma for molten rock that is underground and lava for molten rock that breaks through the Earth’s surface.

What are the 7 types of volcanoes?

What are the Different Types of Volcanoes?Cinder Cone Volcanoes: These are the simplest type of volcano. … Composite Volcanoes: Composite volcanoes, or stratovolcanoes make up some of the world’s most memorable mountains: Mount Rainier, Mount Fuji, and Mount Cotopaxi, for example. … Shield Volcanoes: … Lava Domes:

Which type of volcano has the steepest sides?

StratovolcanoStratovolcano. This is the steepest type of volcano. It is made up of layers of ash and lava. The lava cools and hardens quickly before spreading very far, and so produces steep sides.

What type of eruption is Taal?

caldera systemTaal volcano is in a caldera system located in southern Luzon island and is one of the most active volcanoes in the Philippines. It has produced around 35 recorded eruptions since 3,580 BCE, ranging from VEI 1 to 6, with the majority of eruptions being a VEI 2.

Do all volcanoes erupt lava?

Image courtesy of USGS. Scientists realized long ago that no two volcanoes erupt the same. … Effusive eruptions – magma rises through the surface and flows out of the volcano as a viscous liquid called lava. Explosive eruptions – magma is torn apart as it rises and reaches the surface in pieces known as pyroclasts.

What are the top 10 most dangerous volcanoes?

Here are the 20 volcanoes that post the biggest risk:8: Akutan Island, Alaska. … 7: Three Sisters, Oregon. … 6: Mount Hood, Oregon. … 5: Mount Shasta, California. … 4: Redoubt volcano, Alaska. … 3: Mount Rainer, Washington. Threat Score: 203. … 2: Mount St. Helens, Washington. … 1: Kilauea volcano, Hawaii. Threat Score: 263.More items…•

How long does a volcanic eruption last?

7 weeksThe median duration of historic eruptions is 7 weeks. Simkin and Siebert (1994) make several important observations: The paroxysmal phase of an eruption can occur during any interval of a volcanoes eruption, for example the 1980 eruption of Mount St.