Introduction to Rocks Poster

ITEM #823s
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$18.64
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The Earth is made of rocks and this poster provides a comprehensive overview of what they are and how they are formed. It begins by explaining that rocks are made of minerals and that each type of rock is the result of a specific mixture of minerals subjected to a clearly defined geological process. The bulk of the poster is divided into three sections, one for each type of rock: igneous, sedimentary and metamorphic. An illustration shows how they are made, and that's followed by photographs of a dozen representational specimens. A dramatic photograph shows a natural formation. The bonus section shows and explains some of the more specialized and popular rock forms such as geodes, concretions, agates and thunder balls. This is a great poster for all children learning about earth science and geology.

Laminated, 24" x 36"

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