Monday, October 29, 2012

Rocks

Metamorphic Rock: Rocks are formed by heat and pressure.

                                        


Magma: Melted rock inside the earth.

 

Lava: Molten rock outside the earth.




Solidification: It is a process in which lava cools down and become solid.


Igneous Rock: It is formed when lava cools down and become hard.




Weathering: Rock break down into pieces by wind, rain, and ice.


Erosion: When rocks are moved to other places.




Sediments: Small rocks broke into small pieces by weathering and erosion.


Compaction: When the sediments become together.


Cementation: When the sediments are glued together.


Sedimentary Rock: Its is formed by different types of sediments, when sediments gets glued together.


No comments:

Post a Comment