Which Type Of Lava Is Less Violent?

What is the steepest type of volcano?

StratovolcanoStratovolcano.

This is the steepest type of volcano.

It is made up of layers of ash and lava..

What lava is most explosive?

Viscous lava will trap pockets of gas within the rock, and not let them pop as bubbles on the surface. But most importantly, highly viscous lava is associated with explosive eruptions and dangerous pyroclastic flows. An example of a low viscosity (fast flowing) lava is basaltic lava.

Which type of lava has the lowest viscosity?

Viscosity of MagmasSummary TableMagma TypeSolidified RockViscosityBasalticBasaltLowAndesiticAndesiteIntermediateRhyoliticRhyoliteHighSep 14, 2015

What are the 3 types of volcano?

Volcanoes are classified by the eruption type and by the volcanic cone shape. There are three basic cone shapes and six eruption types. The three cone shapes are cinder cones, shield cones, and composite cones or stratovolcanoes.

Is felsic lava thick or thin?

Felsic lavas are not as hot, high in silica and volatiles, and have a high viscosity. They are thick and gooey and resist flowing. Their high volatile content makes them potentially highly explosive.

Which lava has the highest viscosity?

rhyoliticThe magma that has the highest viscosity is rhyolitic magma.

What volcano can destroy the world?

Yellowstone volcano WARNING: Catastrophic eruption would destroy ALL life on Earth.

What are 4 types of lava?

The most common way to divide lava flows into distinct types is following: Pahoehoe lava flow, Aa lava flow, Blocky lava flow, and also Pillow lava flow.

Which type of lava is the most dangerous?

Composite volcanoes are some of the most dangerous volcanoes on the planet. They tend to occur along oceanic-to-oceanic or oceanic-to-continental boundaries because of subduction zones. They tend to be made of felsic to intermediate rock and the viscosity of the lava means that eruptions tend to be explosive.

Which volcanic eruptions are the most dangerous?

In 1815, Mount Tambora erupted on Sumbawa, an island of modern-day Indonesia. Historians regard it as the volcano eruption with the deadliest known direct impact: roughly 100,000 people died in the immediate aftermath.

What is the most dangerous volcano in the world today?

8 of the World’s Most Dangerous Volcanoes, According to ExpertsMount Vesuvius. Mt. … Mount Rainier. Photo Taken In Naches, United States. … Novarupta Volcano. Chlaus Lotscher / Design Pics—Getty Images/First Light. … Mount Pinatubo. Photo Taken In Philippines, Manila. … Mount St. Helens. … Mount Agung. … Mount Fuji. … Mount Merapi.

What kills you in a volcanic eruption?

If the ashfall is really heavy it can make it impossible to breathe. … Pyroclastic flows are mixtures of hot gas and ash, and they travel very quickly down the slopes of volcanoes. They are so hot and choking that if you are caught in one it will kill you.

What are the 5 most active volcanoes?

Let’s take a look at the world’s most active volcanoes.Santa Maria – Guatemala. Source: NASA Earth Observatory. … Sakurajima – Japan. … Galeras – Colombia. … Mount Merapi – Indonesia. … Taal Volcano – Phillipines. … Mount Nyiragongo – Congo. … Mount Vesuvius – Italy. … Eyjafjallajokull – Iceland.More items…•

What type of volcanic eruption is the least violent?

Volcanic Explosivity IndexVEIPlume heightEruption type0<100 m (330 ft)hawaiian1100–1,000 (300–3,300 ft)hawaiian strombolian21–5km (1–3 mi)strombolian vulcanian33–15(2–9 mi)vulcanian6 more rows

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. This type of volcano does not burst out violently. … One example of that is Taal Volcano, a small volcano located in an island at Batangas, Philippines.

Has anyone ever died from lava?

Its lava flows have quite literally been erupting in people’s backyards, but thankfully only one serious injury has been reported – a man hit by projectile molten rock as he sat on his balcony.

Why are some eruptions quiet and others violent?

The two main factors that influence how a volcano will erupt are viscosity and gas content. Both are related to the composition of the magma . … Ultimately, enough bubbles grow and expand to blow the magma into ash size fragments and eject them violently into the atmosphere.

What is the biggest type of volcano?

shield volcanoesMauna Kea and Mauna Loa are shield volcanoes. They are the world’s largest active volcanoes, rising nearly 9 km above the sea floor around the island of Hawaii.