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Lava cools to become a crust of stone with many small air bubbles, often called lavarock
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What type of lava is thick stiff and does not flow easily?
Aa lava is the type of lava that forms a thick, brittle crust.
What is the importance of a silica and oxygen in lava flow speed?
Silica will determine if the lava is hot and runny or thick and slow!
What are the four types of lava that form at hot spots and their characteristics?
Aa is lava that forms a thick ,brittle crust . Pahoehoe is a lava that forms a thin crust. Pillow lava forms when lava erupts underwater. Blocky lava is kool, stiff lava that does not travel far from thr eruption site.
How do lava tubes caves formed?
Lava tubs form as a result of pahoehoe lava flows. As one of these flows progresses, it builds of a layer of rock on top of it. eventually, thus becomes thick enough to support is own weight, and forms an insulating tube through which lava can flow.
Why would felsic lava not produce a natural tunnel within itself as it cools?
Lava tubes formed from mafic lava form when the lava forms a crust over itself, creating a tube through which it can flow and later leave empty. Felsic lava forms a crust, but is too viscous to entirely flow out of it.
What type of lava is thick stiff and does not flow easily?
Aa lava is the type of lava that forms a thick, brittle crust.
How many types of lava flow?
2. Thick or runny lava. Thick flows slowly, runny flows faster.
This type of lava is thick stiff and does not flow easily.?
Aa
What is the importance of a silica and oxygen in lava flow speed?
Silica will determine if the lava is hot and runny or thick and slow!
What are the four types of lava that form at hot spots and their characteristics?
Aa is lava that forms a thick ,brittle crust . Pahoehoe is a lava that forms a thin crust. Pillow lava forms when lava erupts underwater. Blocky lava is kool, stiff lava that does not travel far from thr eruption site.
Which is a rounded volcanic feature that forms when a mass of thick lava slowly erupts from the vent?
This is called a lava dome.
How do lava tubes caves formed?
Lava tubs form as a result of pahoehoe lava flows. As one of these flows progresses, it builds of a layer of rock on top of it. eventually, thus becomes thick enough to support is own weight, and forms an insulating tube through which lava can flow.
Why would felsic lava not produce a natural tunnel within itself as it cools?
Lava tubes formed from mafic lava form when the lava forms a crust over itself, creating a tube through which it can flow and later leave empty. Felsic lava forms a crust, but is too viscous to entirely flow out of it.
What is the name of the volcano that is built by thick layer of lava?
A shield volcano. Generally they have runny lava that forms lots of thick layers. The Hawaiian island volcanos are good examples.
Lava that forms smooth ropelike coils when it hardens is called?
Pahoehoe
Is Pumice formed deep underground?
No. Pumice forms from gas-rich lava that is ejected into the air.
Where would you expect to find the largest crystals in a lava flow?
You would find the largest crystals in a lava flow in the center of the flow. The largest forms of igneous intrusions are called batholiths.
