How ar the Three Kinds of Rocks FormedThere ar troika different kinds of rocks : sedimentary , metamorphic and igneous rocks . Each of these be formed in a different waySedimentary rocks argon bits and pieces of eroded earth that are swept away into the bottoms of the different bodies of water like the sea lake and oceans . When these bits of earth settle under the water , they form layers . The carcass of weights of the layers on top tend to press down the ones at the bottom and make it more compact . In condemnation , these will become solid aqueous rocks . Examples of sedimentary rocks are sandstones limestones , shale , conglomerate and gypsum rocksMetamorphic rocks were originally either igneous or sedimentary rocks that have been formed into this type because of heavy pressure when they are pushed underneath the o ther rocks . When these rocks are forced to become so compact because of the heavy pressure above them , heat builds up and causes the deformation .
Examples of metamorphic rocks are schist and gneissGranite rocks come from volcanic circularize that transform into rocks because of slow cooling . This ice- gelid change in temperature happens when lava suddenly flows on the ground and traps cooling pockets of magma underneath . The cold temperature cools the lava slowly and forms the granite rocks . Examples of granite rocks are scoria , pumice which are very(prenominal) dismount and may float on water and obsid ian . These three types of granite are also ! considered to be glassReference Rock Hounds (1999 . The Franklin Institute . Retrieved June 5 , 2007 from httpwww .fi .edu /fellows /fellow1 /oct98 /index2 .htmlKind of Rocks pageboy 1...If you want to get a full essay, assure it on our website:
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