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Are rocks that are changed by metamorphism more porous or less?
Wiki User
∙ 11y ago
Than?? Marble certainly isn't porous.
Wiki User
∙ 11y ago
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Are rocks changed by metamorphism less dense?
That depends on the rock and the type of metamorphism is underwent. Some rocks become more dense, some become less.
What porous object?
* able to absorb fluids; "the partly porous walls of our digestive system"; "compactin the soil to make it less porous" * full of pores or vessels or holes == ==
What is low-grade metamorphism?
Alow-grade metamorphism is when the rock turns to shale,a sedimentary rock then to slate
Can metamorphic rocks float?
The extrusive volcanic rock pumice can float on water. Other extrusive volcanic rocks are not so lucky.
Why is the catalyst made porous?
By making the pellets porous, you maximize the surface to volume ratio of the catalyst, which allows you to use less of it, but get the same effect.
Are rocks changed by metamorphism less dense?
That depends on the rock and the type of metamorphism is underwent. Some rocks become more dense, some become less.
Does metamorphism make the rock more porous or less porous?
more porous
Are rocks that are changed by metamorphism more or less dense?
More. There are more molecules in the stone after it is changed.
Are igneous rocks less porous than sedimentary rocks?
Sedimentary rocks tend to be more porous than igneous rocks because there is more open space between the individual sediment grains than between the minerals in a crystallized rock.
What porous object?
* able to absorb fluids; "the partly porous walls of our digestive system"; "compactin the soil to make it less porous" * full of pores or vessels or holes == ==
Is metamorphic rock non porous rock?
Yes. Since metamorphic rocks are rocks that have been changed through intense heat and pressure, they have been compacted and are more dense. For example, a conglomerate is a sedimentary rock comprised of large grains of gravel that have been cemented together, and can be porous. When a conglomerate undergoes massive heat and pressure, it is metamorphosed into a metaconglomerate, which is more dense and not at all porous.
What is a permeable rock and why does it weather easily?
Porous rocks weather more easily for different reasons:Many porous rocks are made from softer materials, thus being more easily weatheredPorous rocks, by definition, tend to have lots of spaces in them where, on a microscopic or even macroscopic level, areas of the rock are not connected on all sides to other rock. As a result, there is less resistance to fracture or other separationsWater can infiltrate porous rocks and dissolve from the inside as well as the outside - even if only very slowlyBecause water can infiltrate porous rocks, they can be fractured from within when the water freezes
Why are sedimentary rocks softer than igneous rock?
It's because sedimentary rocks have big air spaces in them which makes them very porous, whereas igneous and metamorphic rocks are less porous, as the crystals are tightly packed.
Are black diamonds more or less expensive than regular diamonds?
Black diamonds are more porous and from younger sedimentary rocks, so they are not as expensive as other diamonds.
What is low-grade metamorphism?
Alow-grade metamorphism is when the rock turns to shale,a sedimentary rock then to slate
Are volcanic rocks porous?
Igneous rocks range from the highly porous pumice to the nearly non-porous granite. In some explosive eruptions of felsic magma, as is the case with pumice, the frothy mixture of rock and gas cools so rapidly that open vesicles are preserved, making it very lightweight and porous. With granite, the intrusive igneous rock has had a long time to cool underground, and with its interlocking crystalline structure, it has an extremely low porosity.
What kinds of rocks are changed by weathering?
All rocks are changed, but it depends on the density. A smooth, hard volcanic rock may take a while to weather because it has less friction, but a bumpy less dense rock may weather faster. However, all rocks wear down by means such as human touching, water, wind, or friction with other rocks. For example in tourist caves some rocks have become smooth from the human touch repeated over and over.
