Science

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The formation of soil happens over an extended period of time, often more than 1000 years. Soil is formed from the weathering (breaking down) of rocks and minerals. The surface rocks break down into smaller pieces and is then mixed with organic matter (decaying plants and animals).

http://www.geocaching.com/seek/cache_details.aspx?guid=a5ac0096-1c88-4307-8fd5-af71868a0c20

GC1JMFF Biological Weathering (Earthcache) in Pennsylvania, United States created by rainbowtree

How is Soil Formed

Parent Material Parent material is basically the earthen materials that make up the soil .

Metamorphic rocks arise from the transformation of existing rock types, in a process called metamorphism , which means "change in form".

Metamorphic rock

Sedimentary rock

Middle Triassic marginal marine sequence of siltstones (below) and limestones (above), Virgin Formation, southwestern Utah , USA Sedimentary rocks are types of rock that are formed by the deposition of material at the Earth 's surface and within bodies of water.

List of rock types

A list of all unique rock types recognized by petrologists .

Igneous rock

Igneous rock (derived from the Latin word ignis meaning fire) is one of the three main rock types , the others being sedimentary and metamorphic rock .

iRubric: Rock Cycle Board Game rubric - Z2W223: RCampus.com

UMNH: Rock Cycle

http://www.uen.org/Lessonplan/preview.cgi?LPid=11513

Summary: Through playing the Rock Cycle Game students will gain an understanding of the cycles that form metamorphic, sedimentary and igneous rocks.

EDTEC 670 - Exploratory Learning Through Simulations and Games

The Rock Cycle Race

rock cycle

Dimensions of need - The soil

http://www.fao.org/docrep/u8480e/u8480e0b.htm

S oil covers most of the land surface of the earth in a thin layer, ranging in thickness from a few centimetres to several metres.

-- home -- environment -- issues -- Rev 20051121,20060712,20070211,

Soil ecology

Rockhounding Arkansas, table of contents

by Rachel M.

Collecting Rocks

Show off your collection with these deluxe display boxes

Making Boxes for your Rock and Mineral Collection

No matter how much you know, there is always something new to learn about science. While your college courses may cover the basics, you can get a more in-depth look at a wide variety of topics from Internet resources such as these great documentaries.