What are the differences between the two types of volcanoes?

What are the differences between the two types of volcanoes?

When magma erupts at the surface as lava, it can form different types of volcano depending on: the viscosity, or stickiness, of the magma. the amount of gas in the magma. the way in which the magma reached the surface.

What do all volcanoes have in common?

All erupting volcanoes release gases, tephra (material fragments) and heat.

What are some similarities and differences between a mountain and volcano?

Mountains and Volcanoes are somewhat similar but the major factor that makes them different is their formation. A mountain is formed due to various geological processes like movement and opposition of tectonic plates but a volcano is formed around a vent that allows magma to reach the surface of the earth.

What are the similarities and differences between geysers and volcanoes?

In layman terms, geysers involve the shooting out of hot water in its liquid or gas phase (steam) whereas volcanoes refer to eruptions of dust, matter, rocks and lava (molten rock). What is this? To begin with, geysers refer to a phenomenon that takes place on the surface.

What are the similarities and differences between cinder cone volcanoes and shield volcanoes?

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. An explosive eruption may create a caldera, a large hole into which the mountain collapses.

What are the differences between volcanoes?

Composite volcanoes have a low magma supply rate, resulting in infrequent eruptions. Shield volcanoes feature basaltic lava. This type of lava is hot, fluid and low in gas content. Shield volcanoes are characterized by a high magma supply rate, lending itself to frequent eruptions.

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 do volcanoes and geysers have in common?

Both volcanoes and geysers depend on a strong heat source in the underground, but they have completely different mecanisms. Geysers don’t need to be at a volcano, but almost always occur in volcanic regions close to a volcano. A volcano does not need to have geysers around.

What do geysers volcanoes and hot springs have in common?

Hot springs and geysers also are manifestations of volcanic activity. They result from the interaction of groundwater with magma or with solidified but still-hot igneous rocks at shallow depths. This action is caused by the water in deep conduits beneath a geyser approaching or reaching the boiling point.

What is the difference between a volcanic crater and a caldera?

The active openings for volcanic activities make the difference between a volcanic crater and a caldera, as some craters occasionally show signs of underneath activities through smoke or steam. Volcanic craters are smaller in size and fairly circular.

Is a caldera a process or a feature?

A caldera is a circular crater with almost vertical walls. The central floor of the caldera is later filled by lava flows that take place subsequently. Thus, caldera is both a process as well as a feature that starts with the collapse of the overlying unstable rocks and gets completed with lava filling the floor.

How are calderas formed from magma?

Earlier, geologists believed that calderas were formed because of blowing away of the top of a volcano with rush of magma and lava upwards. Crater. A volcanic crater is a bowl like structure at the top of a volcano around the opening that is used for eruption of magma and lava.

What is the difference between shield volcano and caldera?

This less-explosive release of lava, known as lava fountain ing, is characteristic of shield volcanoes. As a shield volcano periodic ally releases lava, it produces nested or terrace d depressions rather than a large bowl-shaped caldera. As a result, shield volcano calderas are usually less than 5 kilometers (3.1 miles) in diameter.