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Shield volcanoes have weak eruptions primarily due to their low-viscosity basaltic lava, which flows easily and allows gas to escape more readily. This fluid lava spreads out over large distances, creating gentle slopes and broad, shield-like shapes. Additionally, the low gas content in basaltic magma reduces the explosive potential, resulting in less violent eruptions compared to more viscous magma types found in stratovolcanoes.
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Why do shield volcanoes have a weak eruptions?
They feature magma with very low viscosity. (Apex)
How are weak spots plate movement and volcanoes related?
All Volcanoes are formed at weaker spots in the tectonic plates. The weak spots are usually near the edges of plates, and most volcanoes are formed there. Sometimes though, plates move over hot spots, and if a weak area of the plate is over that hot spot, a volcano (shield volcano) might form.
Where are the volcanoes that have both explosive and nonexplosive eruptions located?
1. The explosive volcanoes are found at points in the earth's crust that are weak. This means the pressure builds up and ash can burst out easily. Some examples are: - Mt. Vesuvius - Mt. Kilauea - Mt. St. Helens
What type of volcano is formed at a weak spot in the middle of a plate?
A hotspot volcano is formed at a weak spot in the middle of a plate. This type of volcano is not located near tectonic plate boundaries and is usually the result of a plume of hot mantle material rising towards the surface, creating a volcanic hotspot. Examples of hotspot volcanoes include the Hawaiian Islands and Yellowstone National Park.
Where does magma erupt through the crust?
Magma erupts through the crust at volcanic vents, which are openings in the Earth's surface where molten rock, gases, and ash are expelled during volcanic eruptions. These vents can be found at various locations such as at mid-ocean ridges, subduction zones, and hotspot volcanoes.
Why do shield volcano have weak eruptions?
They feature magma with very low viscosity
Why do shield volcanoes have a weak eruptions?
They feature magma with very low viscosity. (Apex)
How are weak spots plate movement and volcanoes related?
All Volcanoes are formed at weaker spots in the tectonic plates. The weak spots are usually near the edges of plates, and most volcanoes are formed there. Sometimes though, plates move over hot spots, and if a weak area of the plate is over that hot spot, a volcano (shield volcano) might form.
Where do earthquakes and volcanes occur?
Earthquakes occur near faults and near the edges of plates in the earth's crust. Volcanic eruptions occur wherever a volcano is. Volcanic eruptions can occur when magma from below Earth's surface seeps through a weak spot in the crust. Volcanoes occur along plate boundaries, along the edges of plates, so this is where volcanoes occur also.
Where are the volcanoes that have both explosive and nonexplosive eruptions located?
1. The explosive volcanoes are found at points in the earth's crust that are weak. This means the pressure builds up and ash can burst out easily. Some examples are: - Mt. Vesuvius - Mt. Kilauea - Mt. St. Helens
Does Livingston Montana have earquakes tornadoes or volcanic eruptions?
There are no volcanoes in or near Livingston, Montana and there have been no major earthquakes in the Livingston area since record began. Tornadoes are fairly rare in Montana, which gets only about 7 each year. Most are weak.
What type of volcano is formed at a weak spot in the middle of a plate?
A hotspot volcano is formed at a weak spot in the middle of a plate. This type of volcano is not located near tectonic plate boundaries and is usually the result of a plume of hot mantle material rising towards the surface, creating a volcanic hotspot. Examples of hotspot volcanoes include the Hawaiian Islands and Yellowstone National Park.
Where does magma erupt through the crust?
Magma erupts through the crust at volcanic vents, which are openings in the Earth's surface where molten rock, gases, and ash are expelled during volcanic eruptions. These vents can be found at various locations such as at mid-ocean ridges, subduction zones, and hotspot volcanoes.
How are volcanoes related to earth?
Volcanoes are found at Convergent and Divergent plate boundaries, where Plate Tectonics is most active. Magma is produced along plate boundaries, like the Ring of Fire around the Pacific Plate, forming volcanoes.
What kind of you eruptions do composite volcanoes make?
Composite volcanoes can contain a wide variaty of magmas ranging from basaltic to rhyolitic.
How can volcanoes errupt under water?
Volcanoes can erupt underwater when magma rises to the surface through a weak spot in the Earth's crust on the ocean floor, known as a mid-ocean ridge or a hotspot. When the magma reaches the cold ocean water, it can cause the water to heat up rapidly, leading to explosive eruptions and the formation of underwater volcanoes.
Where does the hotspot begin to produce a pool of magma?
A hotspot begins to produce a pool of magma beneath the Earth's lithosphere, typically in the mantle. The magma rises towards the surface through cracks and weak points in the crust, leading to the formation of volcanic features such as shield volcanoes or lava plateaus.
