The answer is implicit in your question - they are physical "objects" of different characteristics so their appearances differ. That's the first way to determine a rock's type: look it it!
There are three (3) different types of rocks, igneous, sedimentary and metamorphic rocks
There are thousands of different types of rocks.
Coal and Sandstone are two types of sedimentary rocks.
Igneous rock is any rock made by the cooling of magma or lava. Igneous rocks come with or without observable crystals that are not in layers or with or without air holes or glasslike. Examples of Igneous rocks are granite, pumice, basalt and apache tears obsidian.
There are many different types of minerals and rocks and they are sometimes hard to distinguish one from another. Apatite rocks are usually transparent green.
There are three (3) different types of rocks, igneous, sedimentary and metamorphic rocks
Each of the rocks form in a different way.
There are thousands of different types of rocks...What type of rocks in particular?
There are thousands of different types of rocks.
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sedimentary rocks
There are lots of different types of rocks in the world.
Language that describes specific objects that are observable to all, in contrast to abstract descriptions
Well, actually, no. As you know, there are A LOT of different types of rocks. Different types of rocks are all over the world, so of course, when we go to the beach and step in the sand, we're stepping on TRILLIONS x99999 types of rocks. So, there are many different types of sand. Hope I was helpful!
Differential
Check the link below for pictures of rocks and rock types.
yes most have many different types