Geology 100 Self-Test 12

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

  1. Why are some minerals stable several kilometers underground but unstable at the earth’s surface?

    2. Your answer:

  2. Describe at least three processes that mechanically weather rock.

    3. Your answer:

  3. Why do stone buildings tend to weather more rapidly in cities than in rural areas?

    4. Your answer:

  4. Physical disintegration of rock into smaller pieces is called

    5. Your answer:
    chemical weathering
    transportation
    depositation
    mechanical weathering

  5. The decomposition of rock from exposure to water and atmospheric gases is called

    6. Your answer:
    chemical weathering
    transportation
    depositation
    mechanical weathering

  6. Which is not a type of mechanical weathering?

    7. Your answer:
    frost wedging
    frost heaving
    pressure release
    oxidation

  7. The single most effective agent of chemical weathering at the Earth’s surface is

    8. Your answer:
    carbonic acid (H2CO3)
    water (H20
    carbon dioxide (CO2)
    hydrochloric acid (HCl)

  8. The most common end product of the chemical weathering of feldspar is

    9. Your answer:
    clay minerals
    pyroxene
    amphibole
    calcite

  9. The most common end product of the chemical weathering of quartz is

    10. Your answer:
    clay minerals
    pyroxene
    calcite
    quartz usually does not weather chemically

  10. The soil horizon containing only organic material is the

    11. Your answer:
    A horizon
    B horizon
    C horizon
    O horizon