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A vent in the Earth's crust from which lava and other materials are ejected is called a volcano.
parasitic cone
Technically, it is not lava until it pours out of the volcano. While it is in the volcano it is still magma. What is not ejected in the form of lava might sink and form a plug, allowing the magma to once again build up in the volcano's magma chamber.
Volcano
Scoria is a frothy form of lava ejected from a volcano as individual pieces.
Ash Bombs Lava Magma etc.
The type of volcano that is built entirely of ejected lava fragments is a volcanic cone. Volcanic cones can be of varying types, and it depends upon the nature, and size of the fragments ejected during the eruption.
A cinder cone volcano is built almost entirely from ejected lava fragments. These fragments can range in size from ash to bombs and are ejected during explosive eruptions. Over time, these layers of eruptive material accumulate to form a steep-sided cone-shaped volcano.
Ashfall is the common name given to the ash rocks and other debris that is ejected from a volcano during an eruption.
No. Scoria is a basaltic lava ejected as fragments from a volcano, typically with a frothy texture.
The matter thrown out of a volcano while it is erupting is called lava, and it consists of melted rock matter. Before erupting, the lava moves underground towards the opening of the volcano. When it is underground like this, it is called magma.
An underwater volcano. The volcano that made Hawaii was a shield volcano.