What are the kinds of rocks?

Question

What are the kinds of rocks?

Answer 1

3 kinds of rocks

igneous rocks- when magama erupts and becomes lava on land, then cools and hardens its an igneous rock ex. pumice

sedimentary- formed when erosion breaks away rocks and other debris to form sediment that then gets in layers and the compression and chemical glue like agents press the layers into rock ex. limestone

metamorphic- is a deformed rock.  it is formed when another rock or a mass of material is underground and subjected in extreme heats and pressures and then metaphors or deforms into another rock ex. marble

remember all these rocks go through a cycle and are all eroded to make sedimentary rocks, deformed to make metamorphic rocks and burried underneath the earth to be melted and combined with lava to make igneous rock

Answer 2

There are three main types of rock, igneous, sedimentary, and metamorphic.

Igneous rocks are the type formed from the cooling of molten rock as either magma or lava. Sedimentary are formed from the compression of sediment over periods of time. Finally, metamorphic rocks are formed by the application of heat and pressure over long periods of time.

Answer 3

There are three main groups of rocks. Igneous, Metamorphic, and Sedimentary.

Igneous: Igneous rocks form from lava. They form when lava cools on earth's surface, or magma cools below earth's surface, and there is a difference between the two. Lava is on earth's surface and has small crystals as a result of faster cooling. Faster cooling=small crystals, such as obsidian. Magma is under Earth's surface, and because under the surface its nearly always hot, the magma cool slowly which results in big crystals. Slow cooling=big crystals, such as granite (though these all make up the crust). Or in other words, which would be more plentiful. If you pour a bucket of water on a plant at one time, or spread that water amount over the days. Pretty much same logic. And going back to Igneous rocks, they are separated by if they are formed inside the earth, Intrusive, or on earths surface, Extrusive. And Igneous rock makes up most of earths crust. The Continental Crust is Granite, which is high in silica which makes it light. And the Oceanic Crust is Basalt, a dark colored rock which is low in silica. The Basalt at the bottom of the ocean is called Pillow Basalt because the way it comes out of the volcanoes at the bottom of the ocean makes it look like a pillow. This is also a cause of sea-floor spreading which is more and more layers of basalt being pushed out of the volcanoes and pushing the old rock towards the continents which results in subduction because continental crust is more dense than oceanic crust.

Metamorphic: Metamorphic Rock is rock that is changed. It comes from other rocks. It is changed by heat and pressure, which is under the earths surface. Metamorphic rocks are grouped by the texture of their grains. It is either banded in a pattern, or just spread out like a clothes in a closet (of someone that is not organized) If it is in a pattern it is called foliated, if not it is called Nonfoliated. Pretty simple. In a pattern or not in a pattern. Metamorphic rock has its own role in our world. Marble is a Metamorphic Rock, which is used in a lot of statues, like the Lincoln Memorial. So without Metamorphic rocks, we are pretty "nonfiled" HAHA nvm.

Sedimentary: Sedimentary are rocks that are formed from weathering, erosion, deposition, compaction, and cementation. AKA Made of sediments that pile up on top of each other. Sedimentary rock are separated into 3 categories. Clastic, Organic, or Chemcial. Clastic Rocks are rocks that formed by sediments. The true sedimentary rock. Made of sediments from other rocks, pebbles, stones, or anything broken off from another rock. A Conglomerate is a Clastic Rock. Organic Rocks are rocks that form from the sediments of dead orgainsms. They are formed from the remains of once living thing such as fishes, worms, or other things as well. Limestone is an Organic Rock. The next are the Chemical Rock. They are rocks that form from solutions, that are made from chemicals. That pretty much it.

Rock Cycles:  All of these rocks are all connected in their own little Earth Cycle Triangle. To become a Sedimentary Rock they need to WED. Be Weathered, Eroded, and Deposited. To become an Igneous Rock, they have to be an MC. Melt and Cool. And to become a Metamorphic Rock they need to buy HP Stocks. Heat and Pressure.

All of the three kind of rocks are all connected in the Rock Cycle, like the Water Cycle. They all can change into the other. Though there are a lot of other in dept thing about the rocks and rock uses, there are just too many to be mentioned here. Rocks Rock!