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Ch 10-8th grade sci

Ch 10- 8th grade science- Weathering

Weathering The process by which rock materials are broken down by the action of physical and chemical processes.
Mechanical weathering The breakdown of rock into smaller pieces by physical means.
Abrasion The grinding and wearing away of rock surfaces through the mechanical action of other rock or sand particles.
Chemical Weathering The process by which rocks break down as a result of chemical reactions.
Acid Precipitation Rain, sleet, or snow, that contains a high concentrations of acid.
Differential weathering The process by which softer, less weather resistant rocks wear away and leave harder, more weather resistant rocks behind.
Soil A loose mixture of rock fragments, organic material, water, and air that can support the growth of vegetation.
Parent rock A rock formation that is the source of soil.
Bedrock The layer of rock beneath soil.
Soil texture The soil quality that is based on the proportions of soil particles.
Soil structure The arrangement of soil particles.
Humus The dark, organic material formed in soil from the decayed remains of plants and animals.
Leaching The removal of substances that can be dissolved from rock, ore, or layers of soil due to the passing of water.
Soil conservation A method to maintain the fertility of the soil by protecting the soil from erosion and nutrient loss.
Erosion The process by which wind, water, ice, or gravity transport soil and sediment from one location to another.
Created by: hsdragon