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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.
Wiki User
∙ 11y ago
Wiki User
∙ 11y agoThey are weaker because they are stratified and not been subjected to heat. Their weakness is in the individual layers which seperate easily.
Wiki User
∙ 14y agoIgneous rocks have an interlocking crystalline structure whereas sedimentary rocks are normally composed of cemented particles.
Wiki User
∙ 12y agoyes because it is sedimentry isnt it
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Name the 3 kinds of rocks?
There are three major types of rock: igneous (formed from the cooling and solidification of magma or lava) sedimentary (laid down as sediments) and metamorphic (changed by heat and/or pressure)
Which rock would be harder to break with a hammer a sedimentary rock or an igneous rock?
You would normally think that an igneous rock would be harder to break. However, it completely depends on which igneous rock is being compared to which sedimentary rock, as their resistance to breakage is so varied. There are some igneous rocks (obsidian and pumice, for example) that would break much easier than some sedimentary rocks, such as chert or flint.
How do igneous rocks form into metamorphic and sedimentary rocks?
Igneous-sedimentary weathering/erosion Igneous-Metamorphic high pressure and heat
What are the engineering considerations for igneous sedimentary and metamorphic rocks?
Engineerig aspect of igneous,metmorphic,sedimentary rock?
What rock is igneous or sedimentary rock that has been changed by extreme pressure or heat?
Igneous or sedimentary rocks that have been transformed by heat or pressure are known as metamorphic rocks.
How do igneous rocks from into a sedimentary rock?
igneous rocks mix with metamorphic rocks and they combine together to make a sedimentary rock. the three themes of science rocks are metamorphic,igneous, and sedimentary.
Is a sedimentary rock an igneous rock?
No. Igneous, sedimentary, and metamorphic rocks are three different categories of rock.
What is required to change an igneous rock into a sedimentary rock?
Igneous rocks are a "finished product". They do not become sedimentary rock - though sedimentary rocks, with heat and pressure can become metamorphic rocks.
What are 3 major rock types?
Igneous Rocks,Sedimentary Rocks,Metamorphic Rocks.
Why do rock fossils form in sedimentary rock and not in igneous rock?
because sedimentary rocks are on the top layer, while igneous rocks are were the magma is
What are the 3 rocks in the rock cycle?
Three (3) rocks in the rock cycle are sedimentary, igneous, and metamorphic rock.
How does a Sedimentary rock to an igneous rock?
The sedimentary rocks would have to melt and cool again to make an igneous rock.
Are igneous rocks made up of igneous rocks?
Sedimentary rock can be made up partially of igneous clasts, but igneous rock is igneous rock.
What is the most common type of rock on earth's surface?
Sedimentary Rocks. 75% of rocks exposed to the surface are sedimentary.
How does a sedimentary rock contain pieces of igneous rocks?
Igneous rock pieces can stick together through cementation to form sedimentary rocks.
What type of rock is made from weathering and erosion?
Sedimentary rock is formed when igneous rocks weather to sediments, then the sediments compact to sedimentary rock. When Igneous rocks are subjected to heat and pressure but do not melt, they become metamorphic rock. When igneous rocks are melted they make other igneous rocks.
Why in a thousand years could a lump of igneous rock stand will above the rest of the landscape?
Igneous rock is hard. If the surrounding rock is softer it will erode more quickly. Sedimentary rocks in particular can be very soft.
