During a volcanic eruption, lava, tephra (ash, lapilli, volcanic bombs and blocks), and various gases are expelled from a volcanic vent or fissure.
Rock that is ejected from a volcano and cools is called volcanic rock or lava rock. This type of rock typically has a fine-grained texture due to rapid cooling.
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.
The question shows a complete lack of knowledge and understanding about volcanoes. It is vague and needs phrasing more clearly. Do you mean who fast does a magma chamber empty? Do you mean the velocity at which magma moves? Basically, it depends on the type of volcano and the conditions of eruption.
The rocks ejected from a volcano that are grapefruit-sized are typically called volcanic bombs. They are formed when molten lava is ejected into the air and solidifies before hitting the ground. Volcanic bombs can vary in size and shape depending on the type of eruption and the properties of the lava.
The weakest type of volcano is known as a "cinder cone" volcano. These volcanoes are typically small in size and are formed from ejected volcanic material that builds up around the vent. They have short eruption periods and are not as explosive as other types of volcanoes.
parasitic cone
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.
Rock that is ejected from a volcano and cools is called volcanic rock or lava rock. This type of rock typically has a fine-grained texture due to rapid cooling.
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.
The question shows a complete lack of knowledge and understanding about volcanoes. It is vague and needs phrasing more clearly. Do you mean who fast does a magma chamber empty? Do you mean the velocity at which magma moves? Basically, it depends on the type of volcano and the conditions of eruption.
The rocks ejected from a volcano that are grapefruit-sized are typically called volcanic bombs. They are formed when molten lava is ejected into the air and solidifies before hitting the ground. Volcanic bombs can vary in size and shape depending on the type of eruption and the properties of the lava.
The weakest type of volcano is known as a "cinder cone" volcano. These volcanoes are typically small in size and are formed from ejected volcanic material that builds up around the vent. They have short eruption periods and are not as explosive as other types of volcanoes.
A Stratovolcano Composite Volcano with aa lava
Lapilli--Lapilli is pyroclastics the size of walnuts.Cinders-- Cinders are a type of pyroclastic material the size of a pea. According to the text, Earth An Introduction to Physical Geology, Cinders come in different forms when "ejected lava blobs are pulverized by the escaping gases".Blocks-- Blocks are particles larger than Lapilli's and are formed by harden lava.Bombs-- Bombs too help to produce blocks, but they are ejected as lava. They take on an streamline shape. They usually tend to fall on the slopes of a cone volcano and they can be ejected far from the volcano due to the force of escaping gasesI answered this earlier but this is a better answer ;)
Volcanic activity can form igneous rocks, such as basalt or andesite. These rocks are formed from the solidification of magma or lava ejected from a volcano.
A scoria cone volcano, also known as a cinder cone volcano, is the type of volcano that has small basaltic cones built during one short eruptive episode. These volcanoes are characterized by their steep sides and formed by the accumulation of volcanic debris, such as scoria and ash, ejected during explosive eruptions.
The outer cone is the layer of rock fragments, ash, and debris that surrounds the central vent of a volcano. It forms from material ejected during eruptions and can vary in composition and size depending on the type of eruption and the volcano's activity. The outer cone contributes to the overall shape and structure of the volcano.