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If volcanoes get their magma from the crust below them what can you say about the silica content of Earths crust under the oceans?
You can say that it is low in silica. -I had this problem in my science class ^_^
When magma reaches the exterior of the Earths crust is becomes?
Lava
What causes magma to flow out of a weak spot in the earths crust?
Geothermal presure.
When magma hardens inside the earths crust it can form vertical what and horizontal sills?
Obsidian
What is a melted rock that can ooze out from below the earths surface through a crack in the crust is called a?
it is just called molten rock, and it comes out of the Earths crust via volcanoes. you can also say that its melted lava
How do volcanoes takes place?
Volcanoes are essentially holes in the earths surface through which magma and lava can erupt. when pressure builds up below the earths crust, magma is then forced violently out of the volcanoes.
If volcanoes get their magma from the crust below them what can you say about the silica content of Earths crust under the oceans?
You can say that it is low in silica. -I had this problem in my science class ^_^
What is the effect of actions of magma in the earths crust?
It is from the Volcano
What is magma that has escaped from the earths crust called?
Lava!
Magma that breack through the earths curst is called?
Once magma breaks through the earths crust it is called"lava"
What is melted rock on the earths is called?
Lava....when its under the earths crust its called magma.
What is it called when magma hardens beneath the earths surface?
crust
When magma reaches the exterior of the Earths crust is becomes?
Lava
What is the opening in earths crust where magma comes to the surface?
The correct answer is Volcanos
When magma hardens inside earths crust it can form vertical?
sills
What is formed as plates within earth bend and crack earths crust?
magma
What causes magma to flow out of a weak spot in the earths crust?
Geothermal presure.
