
Soil AG Science
Quiz by edel kinsella
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39 questions
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- Q1What is flocculation?The formation of soil layersThe movement of soil particles due to water flowThe coming together of small primary soil particles such as clay and humus to form clusters called flocculesThe process of soil erosionThe breakdown of soil particles into smaller components30s
- Q2What is aggregation in soil science?The process of soil formationThe separation of soil particlesThe migration of soil nutrientsThe breakdown of soil structureThe joining together of floccules to form larger units called aggregates30s
- Q3What is pH?A measure of soil particle sizeAn indicator of soil fertilityA measure of the hydrogen ion concentration in a substance (how acidic or basic the substance is)A type of soil nutrientA measure of water content in soil30s
- Q4What is cation exchange capacity (C.E.C.)?A measure of soil pHAn indicator of soil fertilityA measure of a soil’s ability to attract, hold and swap positively charged ions called cationsThe total amount of cations in soilA measure of soil erosion30s
- Q5What is lime used for in soils?Ground limestone, containing calcium carbonate or magnesium carbonate, spread on soil in order to improve pH, make nutrients more available and improve soil structureTo increase soil erosionTo enhance plant growthTo decrease soil pHTo reduce soil fertility30s
- Q6What is immobilisation in soil science?The movement of soil particlesThe release of nutrients to plantsWhen nutrients become unavailable to plants due to unsuitable pH values in soilThe breakdown of soil organic matterThe retention of nutrients in soil30s
- Q7What are soil colloids?Water molecules in soilThe smallest soil particles, usually clay or humus, which are the most chemically activeOrganic matter in soilLarge soil aggregatesInorganic minerals in soil30s
- Q8What does a pH meter measure?The pH of a substance accuratelyThe soil organic matter contentThe soil particle size distributionThe nutrient content in soilThe water content in soil30s
- Q9What is cation exchange?The loss of cations from soilThe ability of a soil to attract, hold and swap positively charged ions called cationsThe conversion of cations to anionsThe creation of cations in soilThe movement of cations in soil30s
- Q10Which mineral element is essential for plant growth and is commonly found in fertilizers?PhosphorusMagnesiumPotassiumNitrogen30s
- Q11What does universal indicator liquid or paper do?Measures the weight of a substanceDetects temperature changes in a substanceShows the approximate pH of a substance by means of a colour changeDetermines the texture of a substance30s
- Q12What is the measure of the amount of sand, silt, and clay in a soil?Soil textureSoil structureSedimentationMineral matter30s
- Q13What is a space in soil that can be filled with air or water?Soil poreGravitational waterFlocculationSoil structure30s
- Q14What is a larger separable unit of soil made up of many smaller units joining together?PorositySedimentationSoil aggregateCementation30s
- Q15What is the depositing of broken down rock or soil particles in a different location?SedimentationSoil compactionFlocculationLoam soil30s