Its texture.
A fractured surface--rough. A polished or worn surface--smooth.
When rocks are pitted or polished by windblown sediments, it is a process known as abrasion. The sediments carried by the wind act as abrasives, wearing down the surface of the rocks over time. This can result in a smoother, polished look or create pits and grooves on the rock surface.
Igneous rocks that form under the surface are called intrusive or plutonic rocks. These rocks cool slowly beneath the Earth's surface, allowing for the formation of large mineral crystals. Examples include granite, diorite, and gabbro.
Igneous rocks that form below the Earth's surface are called intrusive igneous rocks. Examples include granite, diorite, and gabbro. These rocks cool and solidify slowly, allowing large crystals to form.
Sedimentary rocks are the type of rocks that can only form on or very near Earth's surface. Sedimentary rocks form from weathering processes that occur on Earth's surface.
Its texture.
the look and feel of sedimentary rocks are sometimes hard and smooth or hard and rough
General physical appearance.
texture
Rocks that feel and look the same likely share similar mineral composition and texture. Minerals present in the rock, as well as the way the rock formed (igneous, sedimentary, metamorphic), contribute to its appearance and feel. Thus, rocks that appear and feel the same are likely to be composed of similar minerals and have undergone similar geological processes.
Look at them. There shape, size, color and feel! Dont worry you will figure it out....
igneous rocks that form on earth's surface
actual texture are the feel and look of a surface be it rough or smooth and seen as such
Sedimentary rocks form on the Earth's crust, and can form metamorphic rocks when buried. Igneous rocks form under the surface, or when liquid magma reaches the surface as lava.
Lava.
Magma is under the surface of Earth's crust. Rocks on earth's surface are well ... on Earth's surface. Magma is also molten rock, not solid rock like the rocks on earth's surface.
Reverse Fault