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igneous with small crystals.
Extrusive igneous rock forms from the solidification of lava. Rocks such as rhyolite, pumice, obsidian, and basalt.
Igneous rocks are formed by magma (inside the earth) or lava (outside earth) that cools and hardens. Extrusive rocks are rocks thathave exited the earths surface.
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Extrusive igneous rocks form when hardens and cools.?
It happens when lava is on the outside the cools down to form EXtrusive rock.
What kind of rock forms when volcanic rock cools?
The type of rock depends on how the volcano erupted and how quickly the lava cooled. Gaseous lava that is cooled is pumice, a stone so light it floats on water. Thick, slow moving lava hardens into rhyolite. Volcanoes in the Hawaiian islands sometimes have their lava cool quickly, forming a smooth, glassy black rock called obsidian. These are all classified as igneous rocks.
What does melting mean in the rock cycle?
When lava melts it cools and forms molten material. Hope this helped you! ^-^
What type of texture forms from igneous rock cooling very quickly?
When lava cools quickly, the minerals in it form very tiny crystals which can usually only be seen under a microscope. To the eye, this results in a smooth appearance.
How does lava dry?
Magma does not dry. Drying implies that the magma becomes solid by loss of water. In reality it becomes solid due to a drop in temperature. So, in reality it freezes. When magma solidifies it becomes intrusive igneous rock.
What rock cools on the surface?
Lava cools quickly and forms rocks with small crystals. They are called extrusive igneous rocks.
How do igneous rock forms from lava?
The lava cools.
Can granite form as a lava flow?
No. Granite forms when granitic magma cools deep underground. When granitic magma erupts as lava it cools more quickly and forms a rock called rhyolite.
What is a 4 letter word for a type of crystal grain that forms when molten rock cools quickly?
lava
Does lava cool slowly or quickly?
Magma that cools quickly forms into igneous rock, when it cools quickly it becomes a lava rock. Lava cools very quickly at first and forms a thin crust that insulates the interior of the lava flow.
What forms when volcanoes erupts and the lava cools?
the lave cools and forms igneous rock
If lava cools to quickly that ions don't have time to arrange themselves into crystals will form what?
glassy texture, hope this helps :)
What types of rock does lava formed?
When lava cools it forms extrusive igneous rock.
What rock is formed when lava cools at the service of the earth?
Extrusive igneous rock such as basalt forms when lava cools at the earth's surface.
What forms extrusive igneous rock when it hardens and cools?
lava
What is formed by cooled magma cooling?
it is lava and when lava cools it forms igneous rock
When lava cools it forms what?
Cooled lava forms extrusive igneous rock, such as rhyolite, basalt, obsidian, and pumice.
