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Earth Science
Chapter 1
20
Science
6th Grade
09/27/2012

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Cards

Term
mineral
Definition
A mineral is a naturally occurring, inorganic solid that forms on or beneath Earth's surface.
Term
crystal
Definition
A solid made up of particles that line up in a pattern that repeats over and over again
Term
rock cycle
Definition
A series of processes on and beneath Earth's surface that slowly change rocks from one kind to another.
Term
igneous rock
Definition
Material that slowly cools and hardens at or beneath the surface. (pg. 50)
Term
sedimentary rock
Definition
A type of rock that forms when particles from other rocks or the remains of plants and animals are pressed and cemented together. (pg. 50)
Term
sediment
Definition

Small, solid pieces of material that come from rocks or living things. (pg. 50, 89)

 

 

Term
metamorphic rock
Definition
Rock that forms when a rock is changed by heat, pressure, or chemical reactions. (pg. 51)
Term
nonrenewable resource
Definition
A natural resource that is not replaced in a useful time frame. (pg. 53)
Term
ore
Definition
Rock that contains a metal or useful mineral. (pg. 54)
Term
smelting
Definition
The process by which ore is melted to separate the useful metal from other elements. (pg. 54)
Term
weathering
Definition
The chemical and physical processes that break down rock at Earth's surface. (pg. 57)
Term
erosion
Definition
The process by which water, ice, wind, or gravity moves weathered rock or soil. (pg. 57, 88)
Term
uniformitarianism
Definition
The geologic principle that the same geologic processes that operate today operated in the past to change Earth's surface. (pg. 57)
Term
mechanical weathering
Definition
The type of weathering in which rock is physically broken into smaller pieces. (pg.58)
Term
abrasion
Definition
The grinding away of rock by other rock particles carried in water, ice, or wind. (pg. 59)
Term
ice wedging
Definition
Process that splits rock when water seeps into cracks, then freezes and expands. (pg. 59)
Term
chemical weathering
Definition
The process that breaks down rock through chemical changes. (pg. 60)
Term
oxidation
Definition
A chemical change in which a substance combines with oxygen, as when iron forms rust. (pg. 61)
Term
permeable
Definition
Characteristic of a material full of tiny, connected air spaces that water can seep through. (pg. 62)
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