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Rocks & Minerals
Vocabulary Words
5
Geology
Kindergarten
03/24/2010

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Term
Petrified Wood
Definition
from the Greek root "petro" meaning "rock" or "stone", literally "wood turned into stone") is a type of fossil.
Term
Sedimentary
Definition
formed by the accumulation and consolidation of mineral and organic fragments that have been deposited by water, ice, or wind
Term
Igneous
Definition
derived by solidification of magma or molten lava emplaced on or below the earth's surface
Term
Metamorphic
Definition
Metamorphic rocks are formed when igneous, sedimentary, or other metamorphic rocks undergo a physical change due to extreme heat and pressure.
Term
Sandstone
Definition
A sedimentary rock formed by the consolidation and compaction of sand and held together by a natural cement, such as silica.
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