Metamorphic Rocks

Metamorphic Rocks are rocks that were once sedimentary or igneous rock but have changed to another under the influence of heat, pressure, or some other agent without passing through a liquid phase.

This picture is of the metamorphic rock slate. Slate is created from the sedimentary rock mudstone.

This picture is of the metamorphic rock marble. Marble is created from the sedimentary rock limestone.

Metamorphic rocks have been changed over time by extreme pressure and heat. These rocks were previously sedimentary or igneous rocks.  Metamorphic rocks can be formed by pressure deep under the Earth's surface, from the extreme heat caused by magma or by the intense collisions and friction of tectonic plates. Two types of metamorphic rocks are slate and marble.

 More information about metamorphic rocks can be found at the link below:
 http://www.sciencekids.co.nz/sciencefacts/earth/metamorphicrocks.html
 

Diffierent Types of Rocks

Good Afternoon 5th Graders!

In science class this week we have been discussing different types of rocks.  We learned that rocks are classified according to their method of formation.  You were each assigned one of the three classes of rocks (sedimentary, metamorphic, and igneous) in class today.  You are responsible for posting information about your assigned rock on this blog. Research your specific rock on the internet and create a post on this blog.

Make sure that your post has the following information:
Title: Your title should state the type of rock classification that you were assigned.
1) Definition of either a sedimentary, metamorphic, or igneous rock.
2) One or two images of this type of rock.
3) A short description explaining:
               a) What is a sedimentary, metamorphic, or igneous rock?
               b) How is this rock formed?
               c) The names of two different sedimentary, metamorphic, or igneous rocks.
4) A link to the website(s) where we can find out more information about this type of rock and how it is formed.

Reminder: You are only writing about the 1 rock classification that you were assigned to in class today.