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Why submarine volcanoes seldom erupt with an explosion?
Submarine volcanoes seldom erupt with an explosion because of the enormous pressure exerted by the weight of water above. This pressure prevents the buildup of gas bubbles that are necessary for explosive eruptions on land. Instead, submarine eruptions usually result in more gentle, effusive flows of lava.
Does lava flow from a shield volcano?
Yes, lava can flow from a shield volcano. Shield volcanoes are typically characterized by low-viscosity lava that flows easily over long distances, creating broad, gentle slopes. The lava flows from shield volcanoes are generally not explosive and occur as a result of the slow accumulation and drainage of magma.
What is Magma that flows onto Earth's surfaces called?
Magma that flows onto Earth's surface is called lava.
What forms as result of lava that has cooled at the top of a volcano?
When lava cools at the top of a volcano, it forms igneous rocks such as basalt or andesite. These rocks can sometimes create formations like lava domes or hardened lava flows.
Does a pyroclastic flow typically occurs during an quite eruption?
No. A "quiet" eruption will produce lava flows. Pyroclastic flows generally result from explosive eruptions.
What type of lava erupts from oceanic vents and quickly cools in the water?
That would be the result of a submarine volcano. Pillow lava is a common type of lava that submarine volcanoes produce.
Why are lava flows not deadly?
Lava flows are generally slow moving, giving people time to evacuate. As a result, they do not kill as often as other volcanic hazards such as pyroclastic flows.
What kind of lava does Mount Etna have?
stratovolcano
Why submarine volcanoes seldom erupt with an explosion?
Submarine volcanoes seldom erupt with an explosion because of the enormous pressure exerted by the weight of water above. This pressure prevents the buildup of gas bubbles that are necessary for explosive eruptions on land. Instead, submarine eruptions usually result in more gentle, effusive flows of lava.
What kind of lava flows result from low water and low silica?
thin magma
What are lava flows on a volcano?
A lava flow is where lava flows down the side of a volcano.
Does lava flow from a shield volcano?
Yes, lava can flow from a shield volcano. Shield volcanoes are typically characterized by low-viscosity lava that flows easily over long distances, creating broad, gentle slopes. The lava flows from shield volcanoes are generally not explosive and occur as a result of the slow accumulation and drainage of magma.
Opening where the lava flows?
the opening where the lava flows is call a vent
What is Magma that flows onto Earth's surfaces called?
Magma that flows onto Earth's surface is called lava.
What forms as result of lava that has cooled at the top of a volcano?
When lava cools at the top of a volcano, it forms igneous rocks such as basalt or andesite. These rocks can sometimes create formations like lava domes or hardened lava flows.
Are all lava flows the same?
No. Lava flows vary in composition. Most lava flows consist of basaltic lava, which can flow as smooth phoehoe or form jagged and broken a'a. Other lava flows are more viscous and will have blocky surfaces and tend to be short and thick.
Does a pyroclastic flow typically occurs during an quite eruption?
No. A "quiet" eruption will produce lava flows. Pyroclastic flows generally result from explosive eruptions.
