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There are types of igneous rocks that are hard (eg granite) and others that are soft (eg volcanic ash).
There are types of metamorphic rocks that are hard (eg gneiss) and others that are soft (eg marble).
Thus "hardness" is not a characteristic that can be used to distinguish between the two.
What else can I help you with?
Is schist a sedimentary or igneous or metamorphic rock?
it is a metamorphic rock
For metamorphic rock to become igneous rock what steps are necessary?
Metamorphic rock can not become igneous rock, however igneous rock can become metamorphic. This process happens over time as the rocks are shifted, compressed and heated by the Earth.
When sedimentary rock is deposited on top of igneous or metamorphic rock?
Metamorphic
What happens when metamorphic rock becomes igneous rock?
Metamorphic rock continues to heat and eventually melts and becomes igneous rocks.
Is opal a sedimentary igneous or metamorphic rock?
igneous
How metamorphic rock turns into igneous?
Metamorphic rock becomes igneous rock when it is melted, then solidifies.
How can an igneous rock become a metamorphic?
A metamorphic rock can become a igneous rock by melting and cooling
Which metamorphic rock changes to an igneous rock?
Any metamorphic rock can melt and recrystallize and become an igneous rock.
How do metamorphic rocks change into igneous rock?
The metamorphic rock melts into magma then cools into igneous rock
How a sedimentary rock or igneous rock become a metamorphic rock?
when sedimentary rocks get exposed to great heat and pressure, they become more consolidated (harder to weather). when igneous rock combines with sediments and the two are heated under pressure, they become one rock, a metamorphic rock
The melting of metamorphic or igneous rock forms what substance?
The melting of metamorphic or igneous rock forms magma.
Are metamorphic rock only made out of from igneous?
No, metamorphic can be formed by either igneous or sedimetary rock.
Can a metamorphic rock go back into and igneous rock?
Yes. A metamorphic rock can melt and the re-solidify as an igneous rock.
How metamorphic rock can change to igneous rock?
if the igneous rock is put under heat and pressure it turns into a metamorphic
Is a seashell an igneous sedimentary or metamorphic rock?
metamorphic rock
Is schist a sedimentary or igneous or metamorphic rock?
it is a metamorphic rock
Is gneiss an igneous metamorphic or sedimentary rock?
It is a Metamorphic rock
