Want this question answered?
Sedimentary rocks are not classified by the terms intrusive or extrusive. These are terms used specifically for igneous rock classification, referring to rock that has formed from melt either below or on the surface.
Igneous rocks are formed from the cooling and solidifying of magma. The resulting rock can be instrusive (magma cooling within the crust) and extrusive (lava cooling on the surface). The most common kind of rocks are Granite (intrusive) and Basalt (extrusive).
igneous rocks form within earths surface
No. Extrusive igneous rock is formed at or near the surface from rapid cooling. Intrusive igneous rock is formed below the surface from slow cooling of magma.
Extrusive rocks do cool quickly because either the crystals in the rock are very small or there are no crystals at all.
There are almost no extrusive rocks on the earths surface because they are all under the earths surface. They are mainly lower than the earths surface.
Extrusive igneous rocks.
extrusive because it forms on or near earths surface
intrusive rocks are formed within the earths surface from magma. extrusive rocks are formed from lava outside of earths surface
Some do. These are called extrusive igneous rocks. However a large portion of igneous rocks form beneath the surface. These are intrusive igneous rocks.
Lava.
extrusive- when melted rock material coools on earths surface instursive-when the melt cools below earths surface
There are almost no extrusive rocks on the earths surface because they are all under the earths surface. They are mainly lower than the earths surface.
Extrusive rocks are formed outside of earths surface. Intrusive rocks are formed inside earths surface.
Extrusive igneous rocks.
It is not true. Extrusive rock forms on the surface from solidifying lava.
Extrusive rocks are formed outside of earths surface. Intrusive rocks are formed inside earths surface.