Life isnít easy for rocks. They are born from
breaking, melting, and extreme pressures. Rocks never die. They are
forever forming and changing. We stand on rocks, build with rocks, grow
food from rocks, and mine resources from rocks.
Look around and you can see that the products of
minerals and rocks are a vital part of our everyday life. Concrete is a
building material made of cement (calcite and clay), sand, and gravel.
Cinder blocks are reformed cinder deposits from a volcano. Homes
use a variety of stones as building and ornamental materials.
The rock cycle is a symbol of an ever-changing
Earth. The three types of rocks igneous, metamorphic, and
sedimentary, record these changes, and it is up to geologists to
decipher the clues and develop a history of the Earth.