What is a mixture of ash cinders and bombs?
Stratovolcano: A large, steep-sided, symmetrical cone built of alternating layers (strata) of lava, ash, cinders, blocks, and bombs. Also called composite volcano, these stratovolcanoes form some of Earth’s grandest mountains rising as much as 8,000 feet above their bases (movie).
What does lava ash and cinders build up to form?
Some of the Earth’s grandest mountains are composite volcanoes–sometimes called stratovolcanoes. They are typically steep-sided, symmetrical cones of large dimension built of alternating layers of lava flows, volcanic ash, cinders, blocks, and bombs and may rise as much as 8,000 feet above their bases.
What type of volcano has runny easy flowing lava?
Shield volcanoes Where a volcano produces low viscosity, runny lava, it spreads far from the source and forms a volcano with gentle slopes: a shield volcano. Most shield volcanoes are formed from fluid, basaltic lava flows.
What landforms do lava and ash create?
Key Concept:Volcanic eruptions create landforms made of lava, ash, and other materials. These landforms include shield volcanoes, cinder cone volcanoes, composite volcanoes, and lava plateaus.
What is the most powerful type of volcano?
Because they form in a system of underground conduits, stratovolcanoes may blow out the sides of the cone as well as the summit crater. Stratovolcanoes are considered the most violent. Mount St. Helens, in Washington state, is a stratovolcano that erupted on May 18, 1980.
What are the 3 types of volcano?
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 volcano will never erupt again?
A dormant volcano is one that is “sleeping” but could awaken in the future, such as Mount Rainier and Mount Fuji. An extinct volcano is “dead” — it hasn’t erupted in the past 10,000 years and is not expected to ever erupt again.
What is the most dangerous type of volcano and why?
Supervolcano eruptions are extremely rare in Earth history. It’s a good thing because they are unimaginably large. A supervolcano must erupt more than 1,000 cubic km (240 cubic miles) of material, compared with 1.2 km3 for Mount St. Not surprisingly, supervolcanoes are the most dangerous type of volcano.
What is the most dangerous type of eruption?
Not surprisingly, supervolcanoes are the most dangerous type of volcano. Supervolcanoes are a fairly new idea in volcanology. The exact cause of supervolcano eruptions is still debated, however, scientists think that a very large magma chamber erupts entirely in one catastrophic explosion.
Should you live near a volcano?
Living near an active volcano can be beneficial as well as dangerous. The soil is fertile, and a lot of volcanic products can be used in everyday life. In addition, the thermal energy from some volcanoes can be used to generate electric power. But if you live too close to a volcano—and it erupts—it can be lethal.
When many layers of thin runny lava build up a high level area the result is a?
Ch. 15 Review Volcanoes
|When many layers of thin, runny lava build up a high, level area, the result is a||lava plateau|
|What provides the force that causes magma to erupt to the surface?||dissolved gases trapped in the magma|
Which is the most dangerous volcano in the world?
Which is the most dangerous volcano in the world? The quick answer: Vesuvius volcano in the Gulf of Naples, Italy.