0
What is pumice and what causes pumice to be light enough to float on water?
Wiki User
∙ 12y ago
Pumice has an extremely low density due to its vesicular nature. Obsidian is not characteristically vesicular like pumice and its density is greater. Therefore, in equally sized samples pumice is lighter.
Wiki User
∙ 15y ago
Anonymous
Wiki User
∙ 14y agoIt's due to its structure, which is essentially a solidified foam with numerous trapped gas bubbles making it less dense than any other rock type. Pumice is formed from rapidly solidifying felsic lavas. The rapid cooling does not allow time for the gas bubbles to escape before solidification occurs.
Wiki User
∙ 14y agoBecause Pumice rocks has holes an obsidian doesnt
Wiki User
∙ 12y agoPumice: A very light and porous volcanic rock formed when a gas-rich froth of glassy lava solidifies rapidly.
Wiki User
∙ 14y agoBecause it contains lots of air bubbles.
Add your answer:
Earn +20 pts
How heavy is pumice?
Pumice, being mostly composed of air bubbles, is surprisingly light for a rock. So light, in fact, that it can float on water.
What is the name of the igneous rock that is light enough to float?
Pumice, an extrusive igneous rock. Pumice is very porous and therefore allows air to get trapped when it is in water. Pumice stones are formed when lava cools quickly, they are usually white in colour and have a heavily pitted surface.
What rock is light enough to float on water?
mantle (da bro) ya ya ya ya ha ha ha ha ha ha ha ha ha ha ha!!!!!!!!!!!!!!!!!
What are facts about Pumice?
Pumice is a volcanic rock that forms when a volcano ejects "foamy" lava. The gas bubbles remain in place after the rock solidifies. One of Pumice's most notable characteristics is that it will float in water.
Is pumice foliated?
Pumice is a light and porous volcanic rock formed when glassy lava solidifies rapidly. Some pumice clasts are known to be foliated.
What is a igneous rock made with volcanic rock with many air holes light enough to float on water?
That is a type of rock called pumice.
How heavy is pumice?
Pumice, being mostly composed of air bubbles, is surprisingly light for a rock. So light, in fact, that it can float on water.
What is the name of a very porous igneous rock that is light it float?
Pumice is an example of this
Is volcanic rock heavy?
Not necessarily. It canbe as heavy as ordinary rock, or much ligher. The lightest rock on earth, pumice, is a volcanic rock. It is light enough to float in water.
How can there be a rock that floats and what are three ways that this rock can be formed?
Very porous rocks such as pumice can be very light and have the potential to float on water. Pumice is a volcanic rock.
Does pumice absorb water?
Pumice is an extrusive igneous rock that has a lower density than an equal volume of water. Pumice forms from an airborne, rapidly cooled frothy magma, full of tiny gas pockets, making it extremely light in weight.
What is the name of the igneous rock that is light enough to float?
Pumice, an extrusive igneous rock. Pumice is very porous and therefore allows air to get trapped when it is in water. Pumice stones are formed when lava cools quickly, they are usually white in colour and have a heavily pitted surface.
What kind of rock can actually float?
PUMICE. Pumice is created by volcanic activity. It looks different from other rocks and even feels light when you hold it in your hand, but it's a genuine rock.
How light is Saturn?
It's light enough to float on water
What rock is light enough to float on water?
mantle (da bro) ya ya ya ya ha ha ha ha ha ha ha ha ha ha ha!!!!!!!!!!!!!!!!!
What stone do not sink in water?
A pumice stone is light weight due to numerous trapped gas bubbles that can cause it to float on water.
What are the characteristics extrusive igneous rocks?
In addition to having small crystals, an extrusive igneous rock can: Be glassy or frothy in appearance. Be felsic, intermediate, mafic, or ultramafic in nature. Be porous or full of bubbles. Be light enough to float (pumice).
