Geology 100 Self-Test 14

Answer the questions below and then click "submit" to send your answers.

  1. What is the origin of coal?

    2. Your answer:

  2. Rounding is

    3. Your answer:
    the rounding of a grain to a spherical shape
    the grinding away of sharp edges and corners of rock fragments during transportation
    a type of mineral
    none of the above

  3. Compaction and cementation are two common processes of

    4. Your answer:
    erosion
    transportation
    depositation
    lithification

  4. Which is not a chemical nor an organic sedimentary rock?

    5. Your answer:
    rock salt
    shale
    limestone
    gypsum

  5. The major difference between breccia and conglomerate is

    6. Your answer:
    size of the grains
    rounding of the grains
    composition of the grains
    all of the above

  6. Which is not a type of sandstone?

    7. Your answer:
    quartz sandstone
    akrose
    greywacke
    coal

  7. In a graded bed the particle size decreases

    8. Your answer:
    upward
    downward
    in the direction of the current
    the direction of the current

  8. The chemical found in dolomite not found in limestone is

    9. Your answer:
    Ca (calcium)
    Mg (magnesium)
    C (carbon)
    O (oxygen)

  9. A sedimentary rock made up of fragments of pre-existing rocks is

    10. Your answer:
    organic
    chemical
    clastic

  10. Clues to the nature of the source area of sediment can be found in

    11. Your answer:
    the composition of the sediment
    sedimentary structures
    rounding of the sediment
    all of the above