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Rocks and Minerals
Chapters 1 & 2
29
Science
9th Grade
09/24/2008

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Term

Rock

Definition
 A naturally occuring solid mixture of one or more minerals orgminc matter
Term
Rock Cycle
Definition
The series of processess in which a rock forms
Term
Weathering
Definition
The processing which water air and ice break down a substence
Term
Erosion
Definition
The way that the earth transports soil
Term
Deposition
Definition
The process in which material is laid down
Term
Composition
Definition
The chemical make up of a rock
Term
Texture
Definition

The quality of a rock that is baised on size and shape.

Term
Destructive Force
Definition
Forces that destroy the crust
Term
Constructive Force
Definition
Force that creates earth
Term
Igneous rock
Definition
Magma cools and becomes rock
Term
Sedimentry rock
Definition
Grains of rock are cemented together
Term
Metamorphic Rock
Definition
When pieces of the earths crust colide
Term
Intrusive Igneous rock
Definition
Rock formed from the earth cooling
Term
Clastic Sedimentary Rock
Definition
Made form fragments of rock
Term
Chemcial Sedimentary Rock
Definition
Formed from solutions of disolved minerals
Term
Organic Sedementary Rock
Definition
Forms from once living things
Term
Mineral
Definition
A naturally formed inorganic solid that has a definete chemical structure
Term
Silicate Mineral
Definition
A mineral that contains a combination of silicon and oxygen
Term
Non Silicate
Definition

A mineralthat does not contain combination of silicon and oxygen

Term
Luster
Definition

The way in which menerals reflect light

Term

Streak

Definition
The color of the powder of a mineral
Term
Cleavage
Definition
The splitting of a mineral along smooth flat surfaces
Term
Fracture
Definition
When the mineral breaks into curved or inregular shapes
Term
Hardness
Definition
A measure of the ability to resist scraching
Term
Density
Definition

The ratio of the mass of a substence to the volume of a substence

Term
Ore
Definition

A natural mineral whose concentration of the economically valuable minerals is high enough for the material to be mined prefitably

Term
Reclamation
Definition
The process of returning land to its original condition aftermining is complete
Term
Foliate Metomorphic Rock
Definition
The texture of metemorphic rock in which the mineral grains
Term
Unfoliated Metamorphic Rock
Definition
The texture of metemorphic rock
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