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Volcanoes

Volcanoes are shaped like mountains, but they eject lava due to tectonic activities beneath the Earth's surface. This can result in eruptions, depending on the intensity and the type of volcano, and cause damage.

16,009 Questions

Who many people dies in the Krakatoa eruption?

Around 36,000 people were killed as a result of the Krakatoa eruption in 1883. The eruption also caused massive tsunamis, which contributed to the high death toll.

When was the first improvised explosive device used?

The first improvised explosive device (IED) is believed to have been used during the Spanish Civil War in the 1930s. These homemade explosives have since been used in various conflicts around the world by different groups and individuals.

What name is given to the liquid inside the volcano?

There are several "fiery liquds" that emanate from volcanos. The most common is molten rock.

Can a person swallow lava without dying?

No, swallowing lava would be extremely dangerous and likely fatal. Lava can reach temperatures of over 1,000 degrees Celsius, causing severe burns and damage to the throat and internal organs. Additionally, the toxic gases released by the lava would also be harmful to ingest.

How do volcanoes form in convergent boundaries?

A convergent plate boundary, otherwise known as a destructive plate margin, forms volcanoes. This happens when

-The subducting plate brings down silicates such as sand down with it.

-Eventually, the plate melts but mixes with the silicates. This forms a more viscose but lighter magma

-This rises because it is lighter until it reaches the moho, (the boundary between the lithosphere and the asthenosphere, (the plate and the stuff it floats own). This is the other plate.

-It then breaks though, slowly rising to the surface.

-It then erupts out of a volcano a few miles in to land.

(This is the continental-oceanic process. The oceanic-oceanic, is slightly different).

What are the names of two different composite volcanoes?

Mount St. Helens and Mount Vesuvius are two examples of composite volcanoes.

What type of boundary is the Olympus mons on?

Olympus Mons is a volcanic boundary on Mars, specifically located on the Tharsis bulge. It is the largest volcano in the solar system and is a result of the interactions between magma and the planet's crust.

Can you be promoted in the inactive reserves?

No, promotions in the inactive reserves are typically not allowed. Inactive reserves do not participate in regular drills or training, so promotions are generally not considered during this time. Promotions may be possible upon transitioning back to active duty or participating in training exercises.

What does volcanoes do to the land?

There are a number of island chains that were created entirely by volcanic eruptions, the most important of these being the Hawaiian islands. Of course, many volcanoes do not create any new land, since the lava that the emit just covers up existing land.

Where did Mt Helelns eruupted and when?

Mount St. Helens erupted in Washington state, USA on May 18, 1980.

What do you smell when a volcano erupts?

Volcano smell like rotten eggs or sulpher..

What is idle dormant inactive mean?

Inactive means someone is not moving at all. Do NOT mistake this is idle. It means this person is lazy, clumping about on the sofa,bed,cpuch,etc., not getting exersise.

i.e. Noah Puckerman!Get up!Stop being so inactive!

(Sorry about the bad sentence)

When did Sunset Crater form?

We can't pin down a specific date, but the last eruption was about 950 years ago.

Why is the shield volcano is the least explosive?

Shield volcanoes are the least explosive because they are formed from low-viscosity basaltic lava, which flows easily and does not trap gas bubbles that lead to explosive eruptions. Instead, the lava slowly oozes out from the vent and spreads over a wide area, creating the characteristic broad, gentle slopes of shield volcanoes.

When magma does not have enough pressure to break completely through the neck and into a central vent it forms?

When magma does not have enough pressure to break completely through the neck and into a central vent, it can form a magma chamber underground beneath the surface. This can lead to the formation of a pluton, such as a batholith, laccolith, or dike, depending on how the magma cools and solidifies within the Earth's crust.

What chemicals make a volcano erupt in school?

In a controlled school experiment, a volcano can be made to erupt using baking soda (sodium bicarbonate) and vinegar (acetic acid). When these substances are combined, carbon dioxide gas is produced, causing the eruption similar to a volcanic explosion. This is a safe and simple way to illustrate volcanic activity in a classroom setting.

Which volcanoes form from the fallen cinders and tephra of an eruption?

Cinder cone volcanoes form from the accumulation of cinders and tephra during an explosive volcanic eruption. This material is ejected from the volcano and falls around the vent, building up a cone-shaped structure. Examples of cinder cone volcanoes include Paricutin in Mexico and Sunset Crater in Arizona.

What is monogenetic volcano?

A monogenetic volcano is a type of volcano that only erupts once in its lifetime, as opposed to the more commonly known polygenetic volcanoes that erupt multiple times. These volcanoes are typically smaller in size and are associated with a single magma chamber. Some examples of monogenetic volcanoes include cinder cones and maars.

How much lava did Rangitoto produce?

Rangitoto Island in New Zealand is estimated to have produced around 2.3 cubic kilometers of lava during its eruption around 600 years ago.

Do shield volcanoes contain mafic or felsic lava?

Yes. Many stratovolcanoes vary in the composition of what they erupt over time. They may cycle in the type of material. As the magma chamber cools, the magma somtimes becomes more felsic only to periodically receive and injection of fresh mafic magma from the mantle.

Which factors determine how violent an eruption will be?

· It is determined by the primary factors of the magma's Temperature, its Composition, and the amount of Dissolved Gases it contains.

How does islands help isolate an area?

Islands can help isolate an area by creating a natural barrier that limits access to the surrounding water. This can protect the ecosystem and wildlife on the island from human interference, invasive species, and other external threats. The isolation provided by islands can also promote unique evolutionary processes, leading to the development of endemic species found nowhere else in the world.

Which type of volcano has not erupted at all during historical times?

A dormant volcano is a type that has not erupted in historical times, which are typically defined as the past few thousand years. These volcanoes are currently inactive but could potentially erupt again in the future.

What do you call a rock that forms when magma hardens beneath earth's suface?

The rock that forms when magma hardens beneath the Earth's surface is called an intrusive igneous rock. Examples include granite and diorite.

When oceanic plates collide with continental plates the oceanic plate goes under the continental plate because?

The oceanic plate subduct under the continental because oceanic is made from basalt(rock) which is denser than andesite and granite(continental)