How deep do you need to dig to find lava?

The models showed that two factors -- the ability of water vapor to bubble out of the magma, and the ability of the crust to expand to accommodate chamber growth -- are the key factors constraining the depth of magma chambers, which are generally found between six and 10 kilometers deep.

Read more

What is it called when a volcano doesn't erupt?

Volcanoes are classified as active, dormant, or extinct. Dormant volcanoes have not erupted for a very long time but may erupt at a future time. Extinct volcanoes are not expected to erupt in the future. Inside an active volcano is a chamber in which molten rock, called magma, collects. How do bubbles form in lava? Method 1: Individual bubbles rise through the magma due to buoyancy force. As they rise, they grow primarily by decompression. When these bubbles reach the surface, they break, releasing gas and perhaps throwing volcanic bombs as the wall of the bubble bursts into the air. As bubbles rise, they grow by decompression.

Correspondingly, how many volcanoes are in the world?

There are about 1,350 potentially active volcanoes worldwide, aside from the continuous belts of volcanoes on the ocean floor at spreading centers like the Mid-Atlantic Ridge. About 500 of those 1,350 volcanoes have erupted in historical time. What's the oldest volcano? Etna The oldest volcano is probably Etna and that is about 350,000 years old. Most of the active volcanoes that we know about seem to be less than 100,000 years old. Volcanoes grow because lava or ash accumulates on the volcano, adding layers and height.

Then, is mount everest a volcano?

Mount Everest is not an active volcano. It is not a volcano but a folded mountain formed at the point of contact between the Indian and Eurasian...