science12

=__Igneous__ __Rocks__= media type="file" key="12.mp3" width="240" height="20" I chose to study igneous rocks because I was interested its cycle. Igneous, metemorphic or sedimentry rocks can all change into each other. Its part of the rock cycle. Igneous forms when magma cools, or by tiny crystals. Magma, a hot liquid, is made of melted minerals. The minerals can form tiny crystals when cooled. Igneous can form underground or above. Magma cools quicker above the surface of earth and slower below. Wind and water can break rock into pieces, and then they can carry the rocks to a different place. That creates a layer, which can be cemented to another layer, creating a sedimentry rock. Igneous rock can be melted, and when so it gets crushed and turns it into a metemorphic rock. Peles hair is one of the few types of extusive rocks. Extrusive is when an igneous rock hardens in air on the surface of earth. Peles hair can float and is covered in tiny hairs.Igneous rock is not measured on the mohs scale, just in case you were wondering. There are many types of igneous rocks such as granite. Igneous, the word, in Greek language means "fire." That would make sense, since igneous rock comes from a volcano. NOW you know why I chose igneous rocks to study.

__Comments from Teachers during the research process:__


 * Note from Mr. Kleyn. What do you mean when you say "google?" How do you spell the word that starts with "ig?"

Note from Mr. VanOrden: Nice questions! I read that the word "igneous" comes from a Greek word for fire. I wonder why we use that word to describe certain types of rock.

Note from Mrs. Smith: Excellent job of reading your work! Your research covers the cycle of how igneous rocks form, but also the other ways that rocks are formed. You've written a very clear summary of the most interesting information.