Saturday, April 9, 2011

Minerals

In my science class we needed to take notes on some questions. First question is, "What are the kinds of rocks" and my reply was Sedimentery, Igneous, and Metamorphic. Sedimentary rock is made when sediments harrdens together.Igneous rock is formed when a volcano erupts and some of the magma gets into something called a magma pool and then it cools, it can also happen outside of the volcano. Metamorphic rock is made when and igneous or sedimentary rock is under high pressure and great heat.  Here is a diagram of the rock cycle
A mineral must have all five of these traits, a solid, naturally made occurring, inorganic, fixed composition, and crystalline form. You might think a rock can't be a mineral but they can if they have all five of these traits. Iron is the most precuis mineral because it is vital for humans because we use it to build things like homes. Here are three minerals with a fact: iron which is used to build things, dimond forms at high pressure and heat, aluminum is a light meatal. Here are three rocks and a fact about them, granite which is used a lot in houses, scoria which has many holes, and halite which is made of cubes.

Here are the sites if you need them.
 


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