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It doesn't necesarily. Pahoehoe is less viscous, so all else being equal, it will move faster. However, a n a'a flow will move faster on a steeper slope.

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11y ago
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5mo ago

Pahoehoe lava has a lower viscosity due to its higher temperature, which allows it to flow more smoothly and form a rope-like texture. Aa lava, on the other hand, has a higher viscosity because it is cooler and more viscous, leading to a blocky and rough appearance that slows down its movement.

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Q: Why is pahoehoe lava slower moving than Aa lava?
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Related questions

What are the differences between the pahoehoe and AA?

Aa is slower, cooler, and has less sillica than pahoehoe. Pahoehoe is faster and moves quickly, and phoehoe has more silica, and is also darker than Aa


What is the difference between pahoehoe and lava?

Pahoehoe is a Hawaiian term used to describe smooth, ropy lava flows, while lava is molten rock that erupts onto the Earth's surface. Pahoehoe lava flows tend to be less viscous and flow more easily compared to other types of lava.


What is the difference between a pahoehoe and AA?

Pahoehoe is smooth and rope-like lava that flows easily, while AA is rough, jagged lava that is cooler and slower-moving. Pahoehoe tends to form in low-viscosity lava flows, while AA forms in higher-viscosity lava flows.


Is pahoehoe fast or slow?

Pahoehoe is hotter than other lavas. It is basaltic lava, which is hotter than the other compositional varieties found on earth today. It is also generally hotter than a'a, another common variety of basaltic lava.


Do cinder cone volcanoes have AA lava or pahoehoe lava?

Pahoehoe and a'a refer to different texutres of lava flows. Although cindercones can produce lava flows, their main mode of eruption is called "fire fountaining" which tends to produce chunks of lava called scoria, rather than pahoehoe or a'a.


Why is it that pahoehoe and AA lava are more frequent in shield volcanoes than in composite volcanoes?

Shield volcanoes have low viscosity basaltic lava, which typically creates pahoehoe and AA lava flows due to their ability to flow easily. Composite volcanoes have higher viscosity lava, such as andesitic or dacitic, which tend to form thicker and blockier lava flows rather than pahoehoe and AA flows.


Is pumice pahoehoe or AA?

pahoehoe is smooth and rope like sufaces. Aa is sharp and jaged last pillow lava is pressure billds up in side the lava untill it craks then it pours out forming yet another pillow on the last one.


Is the lava of Krakatoa AAA or pahoehoe?

The lava of Krakatoa volcano is typically AAA lava, which is characterized by its thick and viscous texture. This type of lava tends to flow slowly and can create steep-sided volcanoes. Pahoehoe lava, on the other hand, is more fluid and forms smooth, rope-like textures when it cools.


Does mt st Helens have pahoehoe or AA lava?

Niether. Pahoehoe and a'a are both varieties of basaltic lava. The material from Pinatobo is of a dacitic composition, which is much more viscous than a'a or pahoehoe. It tends to erupt explosively, producing ash and pumice rather than lava flows. When dacitic lava does flow it creates a block lava flow.


Is pahoehoe considered pyroclastic debris?

No, pahoehoe lava is not considered pyroclastic debris. Pahoehoe is a type of basaltic lava that has a smooth, rope-like texture due to its low viscosity. Pyroclastic debris refers to fragmented material such as ash, volcanic rocks, and gases that are blasted out of a volcano during an explosive eruption.


What do lava flows the made of pahoehoe and AA Indicate about the type of volcanic eruption that occurred?

Lava flows of pahoehoe and aa indicate that the eruption was effusive ("quiet") rather than explosive, or only very mildly explosive.


What do lava flows made of pahoehoe and AA indicate about the the type of volcanic eruptions and occurred?

Lava flows of pahoehoe and aa indicate that the eruption was effusive ("quiet") rather than explosive, or only very mildly explosive.