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Soil AG Science

Quiz by edel kinsella

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39 questions
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  • Q1
    What is flocculation?
    The formation of soil layers
    The movement of soil particles due to water flow
    The coming together of small primary soil particles such as clay and humus to form clusters called floccules
    The process of soil erosion
    The breakdown of soil particles into smaller components
    30s
  • Q2
    What is aggregation in soil science?
    The process of soil formation
    The separation of soil particles
    The migration of soil nutrients
    The breakdown of soil structure
    The joining together of floccules to form larger units called aggregates
    30s
  • Q3
    What is pH?
    A measure of soil particle size
    An indicator of soil fertility
    A measure of the hydrogen ion concentration in a substance (how acidic or basic the substance is)
    A type of soil nutrient
    A measure of water content in soil
    30s
  • Q4
    What is cation exchange capacity (C.E.C.)?
    A measure of soil pH
    An indicator of soil fertility
    A measure of a soil’s ability to attract, hold and swap positively charged ions called cations
    The total amount of cations in soil
    A measure of soil erosion
    30s
  • Q5
    What 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 structure
    To increase soil erosion
    To enhance plant growth
    To decrease soil pH
    To reduce soil fertility
    30s
  • Q6
    What is immobilisation in soil science?
    The movement of soil particles
    The release of nutrients to plants
    When nutrients become unavailable to plants due to unsuitable pH values in soil
    The breakdown of soil organic matter
    The retention of nutrients in soil
    30s
  • Q7
    What are soil colloids?
    Water molecules in soil
    The smallest soil particles, usually clay or humus, which are the most chemically active
    Organic matter in soil
    Large soil aggregates
    Inorganic minerals in soil
    30s
  • Q8
    What does a pH meter measure?
    The pH of a substance accurately
    The soil organic matter content
    The soil particle size distribution
    The nutrient content in soil
    The water content in soil
    30s
  • Q9
    What is cation exchange?
    The loss of cations from soil
    The ability of a soil to attract, hold and swap positively charged ions called cations
    The conversion of cations to anions
    The creation of cations in soil
    The movement of cations in soil
    30s
  • Q10
    Which mineral element is essential for plant growth and is commonly found in fertilizers?
    Phosphorus
    Magnesium
    Potassium
    Nitrogen
    30s
  • Q11
    What does universal indicator liquid or paper do?
    Measures the weight of a substance
    Detects temperature changes in a substance
    Shows the approximate pH of a substance by means of a colour change
    Determines the texture of a substance
    30s
  • Q12
    What is the measure of the amount of sand, silt, and clay in a soil?
    Soil texture
    Soil structure
    Sedimentation
    Mineral matter
    30s
  • Q13
    What is a space in soil that can be filled with air or water?
    Soil pore
    Gravitational water
    Flocculation
    Soil structure
    30s
  • Q14
    What is a larger separable unit of soil made up of many smaller units joining together?
    Porosity
    Sedimentation
    Soil aggregate
    Cementation
    30s
  • Q15
    What is the depositing of broken down rock or soil particles in a different location?
    Sedimentation
    Soil compaction
    Flocculation
    Loam soil
    30s

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