volcanoes form when there is a crack in the earth's crust and a chamber of hot rocks(magma chamber) builds up pressure and eventually lava flows out of the crack
Shield volcanoes form extensive fluid lava flow that erupts numerous times.
This is known as lava.
the liquid materials inside the earth is the magma. Or in another words, the lava which erupts from volcanoes
Volcanoes erupt when pressure from inside the earth pushes magma through a weakness in the earth's surface. As more and more magma erupts, the volcano is formed and grows.
Volcanoes that erupts are known as active volcanoes.
No, the Earth's mantle is to deep and warm for this. Magmas are generated in the upper mantle by a process called partial melting and the melt collects in the crust (in magma chambers at varying depth).
A volcano erupts
The cause is valcano's are conected to the earth's root which is made from lava and when this gets full it erupts
Magma that reaches the surface erupts from volcanoes, either effusively to form lava or explosively to form ash, pumice and cinders. Lava and in some cases ash will then cool to form solid rock.
they form differntly
A thin place on Earth's crust where a volcano can form is called a "hotspot." This is a location where magma from the mantle rises to the surface, often creating volcanic activity. As the magma erupts through the Earth's crust, it can result in the formation of volcanic features like volcanoes, lava flows, and volcanic islands.
Magma is hot liquid lava that erupts out of a volcano, it's already under the entire surface of the Earth. In areas where the crust is weak, that's where the magma forms.