[DOC] [TLE] Interactives . The Rock Cycle . Types of Rocks - Annenberg Learner [PAR]  [DOC] [TLE] The 3 basic rock types - U. of Oregon [PAR] Just as any person can be put into one of two main categories of human being, 
all rocks can be put into one of three fundamentally different types of rocks. [DOC] [TLE] Interactives . The Rock Cycle . Types of Rocks - Annenberg Learner [PAR] The three main types, or classes, of rock are sedimentary, metamorphic, and igneous and the differences among them have to do with how they are formed. Sedimentary rocks are formed from particles of sand, shells, pebbles, and other fragments of material. Together, all these particles are called sediment. [DOC] [TLE] The Three Categories of Rocks and the Rock Cycle - dummies [PAR] Geologists classify the rocks of earth's crust in one of three categories ... and 
compaction, any one rock type can be changed into a different rock type as its... [DOC] [TLE] Types of Rocks: The Three Major Rock Groups - Video & Lesson ... [PAR] As it turns out, rocks can be put into three fundamentally different types: Igneous rock. Sedimentary rock. Metamorphic rock. [DOC] [TLE] Types of Rocks - Kids Love Rocks [PAR] No one else in the world will have a rock collection just like yours. ... Geologist 
classify rocks into three basic groups based on how they were formed in nature. [DOC] [TLE] Three types of rock - American Museum of Natural History [PAR] There are three kinds of rock: igneous, sedimentary, and metamorphic. Igneous 
rocks form when molten rock (magma or lava) cools and solidifies. Sedimentary... [DOC] [TLE] Rock (geology) - Wikipedia [PAR] The types and abundance of minerals in a rock are determined by the manner in 
which ... The proportion of silica in rocks and minerals is a major factor in ... 
These events produce three general classes of rock: igneous,... [DOC] [TLE] The 3 Rock Types Explained: Untamed Science [PAR] Learn about the major rock types: Igneous, Sedimentary, and Metamorphic, ... 
One good reason is that the rock types can often reveal a great deal about the... [DOC] [TLE] Rocks: Pictures of Igneous, Metamorphic and Sedimentary Rocks [PAR] Igneous Rocks: Photos, descriptions and facts about intrusive and extrusive .... on 
Mars Many of the rocks found on Mars are not very different from Earth rocks. [DOC] [TLE] What are the three main types of rocks? | Reference.com [PAR] All rocks fall into the three main categories of igneous, metamorphic or 
sedimentary. These rocks vary widely in physical appearance and location and 
their... [DOC] [TLE] High School Earth Science/Types of Rocks - Wikibooks, open books ... [PAR] Rocks are classified according to how they were formed. The three main kinds of 
rocks are: 1. Igneous... [DOC] [TLE] Identifying Rocks and Minerals/Types of Rocks - Wikibooks, open ... [PAR] There are three different types of rocks: Igneous, Sedimentary, and Metamorphic. 
... Coarse grains are more than 3/16 of an inch; medium grains, 1/64-3/16; and... [DOC] [TLE] BBC - GCSE Bitesize: Rock types [PAR] Rocks found on the Earth's surface actually come from inside the Earth - so they 
tell us a ... They are classified (organised) into three main groups: igneous rocks,
... [DOC] [TLE] Types of Rocks - Igneous, sedimentary, metamorphic [PAR] Three basic types of rocks are: igneous, sedimentary, metamorphic. Also on this 
site find everything about physical and optical properties of stones and minerals. [DOC] [TLE] The types of rock: igneous, metarmorphic and sedimentary [PAR] Jan 12, 2015 ... The three main types of geological rocks are described. They are... [DOC] [TLE] Geography4Kids.com: Earth Structure: Rock Types [PAR] Let's start off with an explanation that rocks and minerals are different things. ... 
Some force (heat/pressure) has changed these rocks from one type into a new 
type. ... The last of the big three rock types is probably the rarest... unless you live
... [DOC] [TLE] What are the different types of plate tectonic boundaries? [PAR] This image shows the three main types of plate boundaries: divergent,

Question: One of the 3 main types of rock
Answer: metamorphic