label the parts of a volcano and write the description of each part
Main Vent-
Secondary Vent-
Crater-
Secondary Cone-
Layers of ash and lava-
Ash clouds-
Ash-
Volcanic Bombs-
Magma Chamber-
Lava Flow-
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Answer:
1. volcanic bombs
2. ash cloud
3. ash
4. crater
5. secondary cone
6. secondary vent
7. lava flow
8. layers of ash and lava
9. main vent
10. magma chamber
Explanation:
A volcanic bomb is a mass of molten rock larger than 64 mm in diameter, formed when a volcano ejects viscous fragments of lava during an eruption. They cool into solid fragments before they reach the ground. Because volcanic bombs cool after they leave the volcano, they are extrusive igneous rocks.
Ash clouds occur where a violent explosive eruption ejects volcanic ash into the atmosphere. ... Ash is composed of small shattered fragments of rock and volcanic glass particles. When gas or water vapour expands dramatically within the magma rocks are blown to pieces by the sudden expansion- an eruption.
Ash or ashes are the solid remnants of fires. Specifically, ash refers to all non-aqueous, non-gaseous residues that remain after something burns. In analytical chemistry, to analyse the mineral and metal content of chemical samples, ash is the non-gaseous, non-liquid residue after complete combustion.
A crater is a bowl-shaped depression, or hollowed-out area, produced by the impact of a meteorite, volcanic activity, or an explosion. Impact Craters. Craters produced by the collision of a meteorite with the Earth (or another planet or moon) are called impact craters.
Secondary Cone:
Also known as a Parasitic Cone, secondary cones build up around secondary vents that reach the surface on larger volcanoes. As they deposit lava and ash on the exterior, they form a smaller cone, one that resembles a horn on the main cone
Secondary vents are smaller outlets through which magma escapes. The crater is created after an eruption blows the top off the volcano.
Lava flows are streams of molten rock that pour or ooze from an erupting vent. Lava is erupted during either nonexplosive activity or explosive lava fountains. ... But when basalt lava flows are confined within a channel or lava tube on a steep slope, the main body of the flow can reach velocities >30 km/h (19 mph).
A volcano composed of steep, alternating layers of lava and pyroclastic materials, including ash, is called a stratovolcano. Stratovolcanoes are also called composite volcanoes because they are built of layers of alternating lava flow, ash and blocks of unmelted stone, according to the U.S. Geological Survey. They are larger than cinder cones, rising up to 8,000 feet (2,438 meters).
main vent - this is the channel through which magma travels to reach the Earth's surface. secondary vent - some magma may escape through the side of the volcano, particularly if the main vent becomes blocked. crater - this is found at the top of the volcano, where the magma erupts from.
A magma chamber is a large pool of liquid rock beneath the surface of the Earth. The molten rock, or magma, in such a chamber is less dense than the surrounding country rock, which produces buoyant forces on the magma that tend to drive it upwards.