Standard Elements
Weathering
Soil
Conservation
Techniques
100
Weathering
What is when rock breaks down?
100
Differential Weathering
What is the process by which the softer, less weather, resistant rocks weather away leaving harder, more weather resistant rocks behind?
100
Parent Material
What is the source of rocks and minerals in soil?
100
Soil Conservation
What is a method of maintaining the fertility of the soil by protecting the soil from erosion and nutrient loss?
100
Contour plowing
What is plowing perpendicular to the slope, across the slope, and slows down water and acts like a dam?
200
Mechanical Weathering
What is the breaking down of rocks by physical means?
200
Climate
What is the average weather conditions for an area over a period of time?
200
Bedrock
What is the layer of rock found beneath top soil?
200
Housing
What is aspect of soil that provides animals with a habitat?
200
Terracing
What is the process of changing one steep field into a series of smaller, more level fields?
300
Abrasion
What is the grinding and wearing away of rock surfaces through mechanical means?
300
Weathering and elevation
What is the high rate of weathering that occurs on mountain tops because of high winds, gravity pulling the rocks down and making them collide?
300
Soil fertility
What is the soils ability to provide nutrients to plants?
300
Desertification
What is the degradation of fertile soil due to soil demage and loss?
300
No-till farming
What is the process of leaving old stalks to provide soil cover and reduces run-off and erosion?
400
Water
What is the element that dissolves rock over long periods of time?
400
Air
What is the element that breaks down rocks through oxidation?
400
Soil horizons
What is the different layers of soil or strata?
400
Water storage
What is aspect of soil that holds water for plant use?
400
Cover Crop
What is the process of crops planted between harvest to replace nutrients and prevent erosion?
500
Chemical Weathering
What is the process that rock breaks down because of chemical reaction?
500
Animals
What is the element that burrows in the soil and can cause rocks to be exposed to weathering?
500
Humus
What is the dark, organic material formed in soil from decayed plants and animals?
500
Erosion
What is prevented by vegetation, soil fences, and conservation techniques?
500
Crop Rotation
What is the process of changing crops out year-to-year to prevent nutrient depletion or loss?
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