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Science

Gems And Jewels

Women of medieval western Europe liked to display their rank by wearing rings and brooches. These pieces of jewelry were usually fashioned from gold with precious stones set among engraved designs of human figures and coiled monsters. Some took the shape of animals that were symbols of family lines. Wearing the brooch showed allegiance to the family.

During the latter part of Middle Ages, jewels were also used to adorn hats and belts. Jewels encrusted the crowns of royalty and headwear of noble women.




Types of Rocks

Igneous Rock

Sedimentary Rock

Metamorphic Rock

How Are They Formed?

They are made when magma or lava cools.

These rocks are made when small particles harden in layers.

These newer rocks are made when heat and pressure change rocks.

Examples

Granite Basalt

Sandstone Conglomerate

Slate Marble


Pictures
More pictures....

Do you know where you can find rocks?

Well let me just say that rocks are all around you. Rock's are found in the Earth's crust. The crust is the solid part of the Earth's surface. It is like the skin of the Earth.

Snow and ice may cover rocks. Some are under deep layers of ice. Plants may grow on top of rocks. Large trees and small flowers may cover rocks.

Rocks may be covered by water. They are in streams and lakes. They are in the ocean. Some rocks form large mountains under the sea.

Do you know the names of the different types of rocks?


  • Some rocks are made when magma cools. This type of rock is called igneous rock.

  • Some rocks are made when small particles harden in layers. This type of rock is called sedimentary rock.

  • Some new rocks are made when heat and pressure change rocks. This type of rock is called metamorphic rock.


    • Do you know how a rock looks?


  • Rocks are not all the same.
  • They come in many shapes, sizes and colors. Each colored part in a rock is a mineral.
  • Minerals make up rocks.


    • Facts About Rocks


  • Rocks are solids.
  • Rocks are nonliving.
  • They are not made by people. They are made by nature.


    • Want To Do Some Simple Experiments? Click here!


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