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Rocks to Soil

TermDefinition
Erosion The process of wearing down and carrying away rocks.
Weathering The process that breaks down rock and other substances.
Mechanical Weathering A type of weathering in which rock is physically broken into smaller pieces.
Chemical Weathering The process that breaks down rock through chemical changes.
Abrasion The wearing away of rock by rock particles carried by water, ice, wind, or gravity.
Frost Wedging Water seeps into cracks of rock then freezes, expanding the rock, and then it thaws. Wedges of ice widen and deepen the rock.
Oxidation Oxygen in air is an important cause of chemical weathering, and iron mixes with oxygen with the presence of water to make rust in a process called this.
Permeable A material is full of tiny, connected air spaces that allow water to seep through it.
Soil The loose, weathered material on Earth's surface in which plants can grow.
Bedrock The solid layer of rock beneath soil.
Humus A dark-colored substance that forms as plant and animal remains decay.
Fertility A measure of how well the soil supports plant growth.
Loam Soil that is made up of
Popular Earth Science sets

 

 



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