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Earth and Space Review - SOIL

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  • Which soil horizon is also known as bedrock?
    horizon R
  • the nutrient-rich, organic material in soil
    humus
  • the amount of space between soil particles
    pore space
  • Which horizons will not ALWAYS be present in a soil profile?
    Horizons O or E
  • rich soil formed from mineral fragments, air, water, and organic material
    topsoil
  • Which soil type is has very tiny particles and can be molded and squeezed to retain its shape?
    clay
  • What characteristics does desert sand have?
    mostly regolith; dry and infertile
  • Which soil horizon is formed mainly from decaying organic matter that pile up on the surface?
    Horizon O
  • Which soil type has medium sized particles that are not easily seen and has a texture of flour?
    silt
  • a cross-section of soil layers and bedrock in a particular region
    soil profile
  • soil that is rich in minerals that have drained from the topsoil
    subsoil
  • What are the major factors that affect soil development?
    climate, vegetation, parent material, time
  • What do we call fertile soil that is rich in humus?
    loam
  • a single layer in a soil profile
    horizon
  • Which type of soil has course grains and large pore space?
    sand
  • Soil is composed of what four main components?
    air, organic matter, rock particles, water
  • In which region would be more likely to find rich, fertile soil? mountain or valley?
    valley
  • layer of solid rock beneath the soil
    bedrock
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