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weather, erosion, deposition
weather, erosion, deposition DC
14
Science
7th Grade
03/07/2011

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Term
abrasion
Definition
a wearing away by friction
Term
bioerosion
Definition
moving of rock material due to living organisms
Term
exfoliation
Definition
a type of mechanical weathering; rocks break down into thin layers or sheets
Term
deposition
Definition
laying down of sediments that was carried in from another place
Term
ice wedging
Definition
a type of mechanical weathering; water fills the joints of rocks and expands as it freezes
Term
carbonation
Definition
a type of chemical weathering where carbon dioxide is added to rock material
Term
chemical weathering
Definition
breaking down of rock due to chemical changes in the rock
Term
mechanical weathering
Definition
physical breaking of a rock without a change in the chemical composition of the rock
Term
weathering
Definition
breaking of rock into smaller pieces
Term
hydrolysis
Definition
type of chemical weathering in which water combines with substances in rocks to form new substances
Term
gravitational erosion
Definition
movement of rock material due to gravity
Term
thermal expansion
Definition
type of mechanical weathering in which there is an expansion/splitting of the earth's surface due to heating and cooling (contraction)
Term
oxidation
Definition
chemical weathering due to a chemical combination of a substance with oxygen
Term
climate
Definition
general weather conditions of an area including the temperature, rainfall, and wind
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