| Rocks
are found in the earth crust. One good place to look for rocks
is a mine shaft. |
| Rocks
are made up of minerals. Different mixes of minerals are found
in different types of rocks . |
| Quarries
are not considered a rock by itself. |
| Granite
is made up of quartz and mica. A lot of things that are man made
are made out of rocks and minerals. |
| Concrete is made of rock particles,
sand and cement. At a wet plant the cement is mixed and made
ready for delivery. |
| Minerals
are also used to make things for transportation as well. Roads are made
from a special rock called asphalt. |
| The
minerals for concrete come from large mining areas. |
| Concrete is mixed and made
ready for delivery. |
| Bricks are made out of minerals.
Most bricks are made of clay and a rock called sheet. After you
make the brick you put it in great ovens called kilns. It takes
about seven days to the finish bricks. |
| Glass is one of the most useful
manufactured items. It is made of sand, limestone and soda ash
which is made from salt. They melt them together until it becomes
liquid. Some glass is flattened to make windows. Other glass
is blown to make bowls and other glass items. |
| Gems are minerals that occur in nature. They are highly
valued because they are rare, beautiful and strong enough to
last in jewelry. |
| Rubies are
found in limestone. The limestone is cut away to free the gem.
The rubies are then cut and polished to make jewelry. |
| Aquamarine
is found just like the ruby. It is cut and polished to bring
out its natural brilliance |
| Rocks and minerals
were not only used for jewelry, but for every day things. |
Other Uses for Rocks
|
| mortar and pestles |
| adobe buildings |
| pyramids |
| all kinds of big beautiful buildings |
| lead pencils |
| statues |
| dishes |
| tool bits made of diamonds |
| silicon chips for computers |
| What would you add to this
list? |
|