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Weathering
vocabulary
9
Science
9th Grade
03/13/2008

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Cards

Term

PRESSURE UNLOADING

(EXFOLIATION)

Definition
PEELING OFF OF FLAT ROCK LAYERS DUE TO EXPANSION OF ROCK
Term

ICE WEDGING

(FROST ACTION)

Definition

WATER IN CRACKS

FREEZES

ROCKS BREAK WHEN WATER THAWS

Term
ROOT ACTION
Definition
PLANT ROOTS BREAK APART ROCK
Term
MECHANICAL WEATHERING
Definition

BREAKING ROCK

INTO SMALLER PIECES

Term
CHEMICAL WEATHERING
Definition

ROCK IS BROKEN DOWN AND COMPOSITION OF ROCK IS CHANGED

Term
OXIDATION
Definition

OXYGEN COMBINES WITH MINERALS TO FORM

RUST

Term
HYDRATION
Definition
WATER COMBINES WITH MINERALS AND A NEW SUBSTANCE IS FORMED
Term
ACID RAIN
Definition

GASES FROM POLLUTION COMBINE WITH MOISTURE IN AIR AND FORM WEAK ACID

Term
CARBONATION
Definition

CO2 COMBINES WITH WATER TO FORM CARBONIC ACID

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