Rock cycle
Introduction of Rocks
- As we recycle paper, plastic and other things, our Earth also recycles. The one of them are Rocks.
- Rocks are formed naturally formed that is solid mixture of one or more minerals.
- The process which the old rocks forms to new rocks is called rock cycle.
- Rocks were important natural resource in human society because all the tools were first made by rocks.
- tools
- knives
- spear points
- scrapers
- arrow heads
- etc.
- buildings were made out of granite limestone marble sandstone and other.
- process to break down rocks in to fragments is wind, water, ice, and heat.
- They use process of erosion to remove sediment from its source.
- After erosion dropped and comes to rest it is called deposition.
- sedimentary rocks could also can be formed by buried sediment is squeezed by the weight or overlying the layers of sediment.
- If the heat and pressure is high enough they could change into metamorphic rock.
- igneous rock (weathering and erosion)=>sedimentary rock(heat and pressure)=> metamorphic rock(melting=> magma(cooling)=>igneous.*the order never changes it goes on and on.
- composition- it describes a mineral that rocks contain.
- The size, shape, position determines *Texture
- fined grain, medium grained and coarse grained rocks.
- We can find out how did the rock formed and where did they formed by looking their texture.
The end by-Soohee jang G7A thank u -3-
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