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What is a cone shaped volcano that has explosive eruptions and quiet periods when lava flows gently?
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What is the difference from a non volcano and active volcano?
Effusive eruptions occur when hot, (1200oC) runny basalt magmas reach the surface. Dissolved gases escape easily as the magma erupts, forming lava that flows downhill quite easily. Effusive eruptions build up gently-sloping Shield Volcanoes like Hawaii. Explosive eruptions occur where cooler, more viscous magmas (such as andesite) reach the surface. Dissolved gases cannot escape as easily, so pressure may build up until gas explosions blast rock and lava fragments into the air! Lava flows are much more thick and sticky so do not flow downhill as easily. These eruptions build up more steeply-sloping Composite volcanoes like this one in Chile.
Basaltic volcano with gently sloping sides are called?
A shield volcano is broad with gently sloping sides.
What happens during volcano eruptions?
What are gentle sided and steep sided volcanoes?
gently sloping volcanoes are called shield volcanoes and they are formed from many eruptions of lava that is relatively low in silica, so it spreads out in many thin layers and creates the gently sloping sides of a shield volcano.
How does the viscosity of magma contrast in quiet and explosive eruptions?
Effusive eruptions occur when hot basalt magmas reach the surface allowing gases to escape easily as the magma erupts. Explosive eruptions occur where cooler, more viscous magmas reach the surface. The gases cannot escape as easily, so pressure builds up until the gasses violently blast out rock and lava.
Does a volcano have to explode?
No. While eruptions can be explosive, they often are not. Many volcanoes will pour out lava relatively gently.
Why does ash cinders and bombs only produced during explosive eruptions from a volcano?
It requires an explosive force to hurl and fragment the molten rock like that. Non explosive eruptions extrude rock more "gently".
What is A type of volcano with gently sloping sides formed by nonexplosive eruptions?
shield
What is the difference from a non volcano and active volcano?
Effusive eruptions occur when hot, (1200oC) runny basalt magmas reach the surface. Dissolved gases escape easily as the magma erupts, forming lava that flows downhill quite easily. Effusive eruptions build up gently-sloping Shield Volcanoes like Hawaii. Explosive eruptions occur where cooler, more viscous magmas (such as andesite) reach the surface. Dissolved gases cannot escape as easily, so pressure may build up until gas explosions blast rock and lava fragments into the air! Lava flows are much more thick and sticky so do not flow downhill as easily. These eruptions build up more steeply-sloping Composite volcanoes like this one in Chile.
A broad volcano with gently sloping sides?
A shield volcano is broad with gently sloping sides.
What is a volcano with gently slopping sides?
Shield Volcano.
Basaltic volcano with gently sloping sides are called?
A shield volcano is broad with gently sloping sides.
What broad gently sloping volcano called?
Shield Volcano
What type volcano has gently sloping sides?
shield volcano
What happens during volcano eruptions?
What are gentle sided and steep sided volcanoes?
gently sloping volcanoes are called shield volcanoes and they are formed from many eruptions of lava that is relatively low in silica, so it spreads out in many thin layers and creates the gently sloping sides of a shield volcano.
How does the viscosity of magma contrast in quiet and explosive eruptions?
Effusive eruptions occur when hot basalt magmas reach the surface allowing gases to escape easily as the magma erupts. Explosive eruptions occur where cooler, more viscous magmas reach the surface. The gases cannot escape as easily, so pressure builds up until the gasses violently blast out rock and lava.
