Thursday, April 30, 2009

activity 2


What is weathering ? the process of big broken a part by wind,water.

What is erosion? the process of moving rock form place to place.

What is deposition? the process of building up the surface of earth by putting down rock.

Where have you observed erosion,weathering,and deposition.

I see the erosion in the volcanoes.

weathering is the wearing away of rock, for example, water in a river makes rocks
bang against each other, breaking pieces off.

where have you observed ersion weathering and deposition? eathering the rocks down the water and stop because is sand so the deposition goes into the river the rocks so in the sand stop and the erosion the rocks moves form place to place.





Friday, April 24, 2009

activity rocks



rock cycle the way rocks change and become different rocks.



the most important of the rocks cycle is the change to rocks happen in a recurring.



the important to I stude is the three main types of rocks are related to one another and how changes to rocks happen in a recuring sequence .



Igneous rocks is made for magma granite,lava rocks, obsidian and pumice.



sedementeri rocks is made for marble,slate,schist,gneiss.