What is the difference between volcano and volcanic eruption?

What is the difference between volcano and volcanic eruption?

The volcano mountain opens downwards to a pool of molten rocks below the surface of the earth. When the pressure builds up in the earth’s crust, eruptions occur.

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.

Is there a volcano called volcano?

The word volcano is derived from the name of Vulcano, a volcanic island in the Aeolian Islands of Italy whose name in turn comes from Vulcan, the god of fire in Roman mythology. The study of volcanoes is called volcanology, sometimes spelled vulcanology.

Is volcanic a lava?

Lava is magma once it has been expelled from the interior of a terrestrial planet (such as Earth) or a moon onto its surface. The volcanic rock resulting from subsequent cooling is also often called lava. A lava flow is an outpouring of lava during an effusive eruption.

Can an extinct volcano erupt again?

A dormant volcano is an active volcano that is not erupting, but supposed to erupt again. An extinct volcano has not had an eruption for at least 10,000 years and is not expected to erupt again in a comparable time scale of the future.

Can volcanoes produce lightning?

During an explosive volcanic eruption, ash, rock, lava, and sometimes water collide, creating electrical charge in the eruption plume, and if the charge build up is high enough, lightning occurs. Not all volcanic eruptions produce lightning.

What are the 7 types of volcanoes?

Composite, shield, cinder cones, and supervolcanoes are the main types of volcanoes. Composite volcanoes are tall, steep cones that produce explosive eruptions. Shield volcanoes form very large, gently sloped mounds from effusive eruptions.

Why do volcanoes explode?

Volcanoes erupt when molten rock called magma rises to the surface. If magma is thick, gas bubbles cannot easily escape and pressure builds up as the magma rises. When the pressure is too much an explosive eruption can happen, which can be dangerous and destructive.

What is a sleeping volcano called?

Dormant → Dormant volcanoes are volcanoes that have not erupted in a long time but are expected to erupt again in the future. Examples of dormant volcanoes are Mount Kilimanjaro, Tanzania, Africa and Mount Fuji in Japan.

Are there any volcanoes that are the same?

Are All Volcanoes The Same? No, there are different types of volcanoes. The nature of a volcano depends on how viscous, or sticky, the magma is. This depends on its temperature and the amount of silica (a mineral) it contains.If the silica content is low, the lava flows out gently, forming a shallow shield-shaped cone.

How are composite volcanoes different from regular volcanoes?

Lava with a very high silica content erupts slowly to form a dome, usually within an existing crater.Composite volcanoes cause the most dangerous, highly explosive, eruptions. These are volcanoes with alternate layers of rock and lava.

How are geysers and volcanoes the same and different?

Both volcanoes and geysers depend on a strong heat source in the underground, but they have completely different mecanisms. A geyser is a phenomenon on the surface, where ground water beneath the shallow surface is heated up until it explodes into boiling water and steam…

Which is the most dangerous type of volcano?

Lava with a very high silica content erupts slowly to form a dome, usually within an existing crater.Composite volcanoes cause the most dangerous, highly explosive, eruptions. These are volcanoes with alternate layers of rock and lava. The magma is moderately viscous and it is mixed with other materials. Are All Volcanoes Shaped Like A Pyramid?