space medium mcq

Aeolian landforms (dunes/ripples) observed on Mars indicate present-day wind activity despite thin atmosphere.

  1. True - active dune migration documented
  2. False - all features ancient
  3. True - but only at poles
  4. False - liquid erosion dominant

Answer: True - active dune migration documented

HiRISE time-series shows meter-scale dune movement; winds reshape surface despite 1% Earth pressure, modifying landing sites and rover traverses.

Topic Solar System - Surface Processes
Exam Relevance SSC General Science, UPSC Prelims

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