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Volcanic landforms and features.
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∙ 13y ago
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How and where are igneous rocks formed?
Igneous rocks are formed on and below the surface of the Earth when lava or magma cools enough to crystallize.
What are volcanoes about?
A volcano is formed when magma from deep inside the Earth rises to the surface and explodes with great force, spreading lava and ash everywhere.
How are marias formed?
marias are formed by hot ash and lava coming through the moons craters
A mountain that forms when layers of lava and ash erupt and builds up is called a?
A mountain formed by the build up of lava and ash is a composite volcanic cone.
Four landforms created from lava and ash?
Three landforms that can be created from ash are cinder cone volcanoes, composite volcanoes, and shield volcanoes. Lava plateaus can also be formed.
Is a lahar lava?
No. A lahar is a mudflow formed by a mixture of water and volcanic ash.
What is the difference between acid lava cones and ash and cinder cones?
Acid lava cones are smaller and much steeper than ash/cinder cones. Acid lava cones are almost convex in shape and are formed due to thick lava that does not flow freely and cools before reaching very far. This gives in the conical 'dumpy' shape. While ash and cinder cones are more symmetrical and concave in shape. They are formed due to volcanic lava or volcanic bombs (of solidified lava) that was shot up in the air, cool and hardened and broke up into tiny pieces (of ash or cinders) before coming back down to the earth's surface.
What is volcano rock?
A volcano rock is rock formed from ash or lava erupted from a volcano.
What us the surface of volcanic mountains made of?
Solidified lava, sulphur, volcanic ash.
Lava flows and volcanic ash are examples of magma that has reached the earth's surface.?
True!
How does volcanic erupt?
Volcanoes are formed when magma from within the Earth's upper mantle works its way to the surface. At the surface, it erupts to form lava flows and ash deposits. Over time as the volcano continues to erupt, it will get bigger and bigger.
When molten rock erupts on earths surface it is called?
Igneous rock that flowed out of the surface if lava; lava blown out of explosive eruptions is Volcanic Ash, or Tuff.
