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• 1. 
  The top layer of soil made up mostly of humus.  Many small animals live here.
  • A. 

    Layer
  • B. 

    Silt
  • C. 

    Topsoil


• 2. 
  The portion of the earth's surface consisting of disintegrated rock and humus.
  • A. 

    Sand
  • B. 

    Clay
  • C. 

    Soil


• 3. 
  Soil with the tiniest pieces (grains) of rock
  • A. 

    Clay
  • B. 

    Sand
  • C. 

    Humus


• 4. 
  Soil with tiny pieces of rock big enough to see with your eyes.
  • A. 

    Clay
  • B. 

    Humus
  • C. 

    Sand


• 5. 
  Part of soil made up of dead plants and animals
  • A. 

    Subsoil
  • B. 

    Humus
  • C. 

    Silt


• 6. 
  The layer under topsoil, does not have much humus, but has small pieces of rock in it
  • A. 

    Clay
  • B. 

    Observe
  • C. 

    Subsoil


• 7. 
  To look at, watch, or study closely
  • A. 

    Observe
  • B. 

    Decomposition
  • C. 

    Erosion


• 8. 
  Soil with pieces of rock too small to see with your eyes
  • A. 

    Layer
  • B. 

    Silt
  • C. 

    Topsoil


• 9. 
  A single thickness of a material covering a surface
  • A. 

    Topsoil
  • B. 

    Layer
  • C. 

    Erosion


• 10. 
  Rotting or breaking down of material into smaller parts
  • A. 

    Erosion
  • B. 

    Bedrock
  • C. 

    Decomposition


• 11. 
  What something is made of
  • A. 

    Erosion
  • B. 

    Decomposition
  • C. 

    Composition


• 12. 
  The movement of weathered rock
  • A. 

    Composition
  • B. 

    Decomposition
  • C. 

    Erosion


• 13. 
  Deeper than subsoil, made of solid rock
  • A. 

    Topsoil
  • B. 

    Subsoil
  • C. 

    Bedrock


• 14. 
  _______ is deeper than subsoil, made of solid rock


• 15. 
  _________ is the movement of weathered rock.


• 16. 
  ____ is what something is made of


• 17. 
  ______ is the rotting or breaking down of material into smaller parts.


• 18. 
  _____ is the top layer of soil made up motly of humus. Many small animals live here.


• 19. 
  Is soil with pieces of rock too small to see with your eyes.


• 20. 
  ______ is a single thickness of a material covering a surface.


• 21. 
  True or False:  To look at, watch, or study closely is to observe.
  • A. 

    True
  • B. 

    False


• 22. 
  Subsoil is the layer under topsoil, does have a ton of humus, and also has large pieces of rock in it.
  • A. 

    True
  • B. 

    False


• 23. 
  Clay is the part of soil made up of dead plants and animals.
  • A. 

    True
  • B. 

    False


• 24. 
  Sand is soil with the tiniest pieces (grains) of rock
  • A. 

    True
  • B. 

    False


• 25. 
  Sand is soil with tiny pieces of rock big enough to see with your eyes.
  • A. 

    True
  • B. 

    False


• 26. 
  Clay is the portion of the earth's surface consisting of disintegrated rock and humus.
  • A. 

    True
  • B. 

    False