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Because lava is molten rock, which has melted, so when it cools down it turns back into rock, like water into ice.
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Are magma and lava sedimentary rocks?
No. Magma and lava are molten rock. When the cool they form igneous rock.
How is a blob of lava turned into rock on the sea bed?
A 'blob' of lava, or magma, can either flow into the sea and eventually cool to form rock or be fired out of the volcano and cool faster when it hits the sea. The flowing lava has a high level of silica; making it runny and the explosion lava (which will cool to form rocks like granite) are high in iron.
What type of rock that forms due to cooling?
Lava will cool to form extrusive igneous rock. The exact type would depend on the composition of the lava.
What rocks come from lava flow?
Lava flows cool to form extrusive igneous rock. Most lava flows consist of basaltic lava, cooling to form a dark rock called basalt. Some, however, may consist of andesite or, rarely, rhyolite and similar lavas.
Is lava a sedimentary rock or igneous?
The common usage of "lava rock" in the USA refers to a black rock with a number of visible bubbles or air pockets that is formed from cooled lava on the surface. Although lava rock is an igneous rock, it is not the same as the definition for the word igneous, which can also include igneous rocks which have solidified from magma below the surface.
What rock form from cooling lava?
Lava will cool to form extrusive igneous rock. The exact type would depend on the composition of the lava.
Are magma and lava sedimentary rocks?
No. Magma and lava are molten rock. When the cool they form igneous rock.
What rock forms from lava that cools?
Lava will cool to form extrusive igneous rock. The exact type would depend on the composition of the lava.
What happens to lava when it enters the ocean?
On contact with water lava will cool rapidly to form rock.
How is a blob of lava turned into rock on the sea bed?
A 'blob' of lava, or magma, can either flow into the sea and eventually cool to form rock or be fired out of the volcano and cool faster when it hits the sea. The flowing lava has a high level of silica; making it runny and the explosion lava (which will cool to form rocks like granite) are high in iron.
What type of rock that forms due to cooling?
Lava will cool to form extrusive igneous rock. The exact type would depend on the composition of the lava.
How did the lava cool from hot lava to hard rock?
The minerals in magma form crystals when solidifying, giving igneous rocks their characteristic hardness.
What rocks come from lava flow?
Lava flows cool to form extrusive igneous rock. Most lava flows consist of basaltic lava, cooling to form a dark rock called basalt. Some, however, may consist of andesite or, rarely, rhyolite and similar lavas.
Is lava a sedimentary rock or igneous?
The common usage of "lava rock" in the USA refers to a black rock with a number of visible bubbles or air pockets that is formed from cooled lava on the surface. Although lava rock is an igneous rock, it is not the same as the definition for the word igneous, which can also include igneous rocks which have solidified from magma below the surface.
When a volcanoes lava washes into the ocean what rock does it form?
lava rock
What rock is formed when magma and lava cool and harden?
Igneous Rock.
What does magma need to do for a rock to form?
Magma is basicaly the same as lava, except magma is still in the volcano, when magma has come out of the volcano, it has become lava.
