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Weathering
Velazquez
15
Science
7th Grade
09/29/2010

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Term
Chemical Weathering
Definition
occurs when chemical reaction dissloves the minerals in rocks or change them into different minerals.
Term
Climate
Definition
weather pattern that occurs in a particular area over many years.
Term
Humus
Definition
dark-colored,decayed organic matter that supplies nutrients to plants and is found mainly in topsoil.
Term
Ice Wedging
Definition
mechanical weathering process that occur when waterv freezes in the cracks of rocks and expands,causing the rock to break apart.
Term
Leaching
Definition
removal of minerals that have been dissolved in water.
Term
Mechanical Weathering
Definition
physical process that breaks rock apart without changing their chemical makeup; can be caused by ice wedging, animals, and plant roots.
Term
Oxiodation
Definition
chemical weathering process that occurs when metallic material is exposed to oxygen and water over time.
Term
Soil
Definition
mixture of weathered rock,decayed organic matter, mineral fragments, water, and air that can thousands of years to develop.
Term
Weathering
Definition
mechanical or chemical surface processes that break rock into smaller and smaller pieces.
Term
Erosion
Definition
process in which surface materials are worn away and transported to one place to another by agents sush as gravity,water, wind, and glaciers.
Term
Deflation
Definition
a type of erosion that occurs when wind blows over loose sediments, removes small particles, and leaves coarser sediments behind.
Term
Deposition
Definition
dropping of sediments that occur when an agent of erosion, such as gravity, a glacier, wind or water loses its energy and can no longer carry its load.
Term
Dune
Definition
mound formed when windblown sediments pile up behind an obstacle; common landform in desert areas.
Term
Mass Movment
Definition
any type of erosion that occurs as gravity moves materials downslope.
Term
Slump
Definition
a type of mass movement that occurs when a mass of material moves down a curved slope.
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