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Creep differs from a landslide in being

  • A.confined to rock rather than soil
  • B.caused only by earthquakes
  • C.slow and imperceptible
  • D.rapid and catastrophic

Answer: C

Correct answer: slow and imperceptible

Creep is the downslope movement of soil at millimetres a year, driven by repeated wetting and drying, freezing and thawing, and the burrowing of animals - each cycle displacing the particles a little further downhill. It is never observed directly; it is inferred from tilted poles and walls, curved tree trunks and bent strata near the surface. A landslide moves the same material in minutes.

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