Rocks By Simone Cairns 9mt

What are rocks used for?? We need rocks for everything when couldn’t live if we didn’t have rocks we need rocks for building Make food and plants Weapons Headstone Roads Rocks are important to us but we just don’t see it

The types of rocks 1. igneous which is from a volcanoes 2. sedimentary which is from period of time under water 3.metamorphic rock which was once a other rock but got change by the sun

Igneous rocks Fire Rocks Formed underground by trapped, cooled magma Formed above ground when volcanoes erupt and magma cools E.G granite, scoria and basalt Fire Rocks Igneous Rocks

Sedimentary rock The wind and water breakdown the earth its settle in a lake and river layer will form, the pressure and time will turn into a rock e.g. sand rock limestone and gypsum Sedimentary Rocks

Metamorphic rock Rocks that have been change by the sun it used to be sedimentary pressure and heat has change them or igneous rock e.g. gold diamonds crystal Metamorphic Rocks

Erosion is Erosion is when the weathering breakdown the rock it is due by the heat water ice is rubbing against the rock weathering Weathering is the breakdown of rocks due to the weather

Freeze-thaw weathering When water get into a crack in a rock As the water turns in to ice it expands Cause the little crack to open a little As it repeated freezing and thawing weaken the rock Common in mountains where the temperature are often around freezing point

Picture of what happen

Onion skin This start when a rock is repeated heated and cooled As the rock gets heated in the day the outer layer of the rock expands slightly This mostly happen it the desert Then the skin starts to peel of this is erosion

Biological weathering Seed falls into crack of rocks Where it will find shelter As the seed starts to grow the rock has to starts to break so then the rock get broking up

Acid rain Acid is in our rain it attack the rock and the will soon melt them it does not look the same

Message from Mr Manson Some nice, useful work on this story Simone I think I would have liked to see you use the pictures a bit better, especially at the start to help you illustrate the points that you are making But some very good work and presentation – don’t go overboard on the custom animations! A2