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When magma hardens inside the earths crust it can form vertical what and horizontal sills?
Obsidian
What do ingeous rocks form from?
a type of rock that forms when magma cools and hardens very slowly deep in earths crust...
What below the Earths's surface cools and hardens to form mineral crystals?
Molten magma cools and hardens to form mineral crystals.
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.
What is it called when magma hardens beneath the earths surface?
crust
When magma hardens inside earths crust it can form vertical?
sills
When magma hardens inside the earths crust it can form vertical what and horizontal sills?
Obsidian
What is magma that hardens within the earths crust called?
It's called intrusive igneous rock.
What do ingeous rocks form from?
a type of rock that forms when magma cools and hardens very slowly deep in earths crust...
When volcano lava cools at the surface?
When magma cools at the surface of the Earth, it cools very quickly and hardens on the Earths crust. However, it continues flowing underneath, forming interesting textures.
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!
What below the Earths's surface cools and hardens to form mineral crystals?
Molten magma cools and hardens to form mineral crystals.
When magma comes up to earths surface and hardens what is it called?
It is called igneous rock.
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.
