No, igneous rocks are harder than sedimentary rocks on average.
Depending on the minerals in their composition, some rocks are harder than others. Rocks that contain minerals with higher ratings on the Mohs scale are harder, and would erode more slowly than other rocks.
uh, i think you mean 'metamorphic'....
Intrusive rocks are under pressure so they are usually harder.
They are generally harder because of their interlocking crystalline structure and mineral composition.
No, igneous rocks are harder than sedimentary rocks on average.
no, teeth are harder than rocks
bigger than your nail
Yes. It is much harder than your fingernail.
harder than metamorphic
The rocks are underground so intrusive rocks are under pressure so its harder.
Depending on the minerals in their composition, some rocks are harder than others. Rocks that contain minerals with higher ratings on the Mohs scale are harder, and would erode more slowly than other rocks.
Absolutely, based on the hardness of the minerals that compose them.
Most likely you would be testing to see if the mineral was harder or softer than the nail.
uh, i think you mean 'metamorphic'....
Intrusive rocks are under pressure so they are usually harder.
They are generally harder because of their interlocking crystalline structure and mineral composition.