mechabic and organic
answer:true
Geologists classify rocks by looking at their chemical and mineralogical composition then at the the size and shape of their component minerals then at any texture, pattern or grain that the rocks may display. They also classify them in relation to how they were formed.
I just learned this in school. The two factors in the rock cycle to form metamorphic rock are extreme heat and/or pressure
Metamorphic rocks are formed from sedimentary and igneous rocks. When sedimentary or igneous rock is subjected to heat and pressure, the rock gets compressed. Therefore, if you had the same amount of metamorphic rock and sedimentary or igneous rock, the metamorphic rock would be heavier, because there is more 'stuff' in the metamorphic rock. ---------------------------------------------- However please note: 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.
Igneous is basically fresh out of a volcano. There are two types: rocks that got cooled slowly, and those that were cooled really fast. After a while, these rocks will break down into sediment, and will form into layers. Then the sediment will go through cementation, where they stick together. At that point, its sedimentary rock! (Like sandstone, in the Grand Canyon!)
No two sedimentary rocks are shaped the same, there are many different shapes
sedimentary and metamorphic rocks
Limestone or Sandstone are two examples of sedimentary rocks. Two examples of sedimentary rocks are slate (fine silt) and chalk (shell remains of sea creatures).
The two major divisions are prose and poetry.
The two main types of sedimentary rocks are clastic (detrital) rocks, which are made of pre-existing rock fragments cemented together, and chemical rocks, which form from minerals that precipitate out of solution.
Coal and Sandstone are two types of sedimentary rocks.
Sedimentary and metamorphic rocks.
They are called chemical sedimentary rocks. Rock salt and rock gypsum are two examples.
sedimentary rock and igenous rock.
There are three major divisions of the brain.* Forebrain * Midbrain * HindbrainHemispheres
The two major divisions of the human nervous system are the central nerves and the peripheral nerves.
Heyfers is one.