Multiple choice general knowledge

What move the "Sailing stones" of Racetrack Playa in California's Death Valley?

  1. Animals

  2. Wind

  3. Scientists have no idea

  4. Pranksters
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The sailing stones move when winter rain creates a thin layer of water that freezes into a floating ice sheet. When the ice breaks up, even light winds can push the ice chunks, which drag the stones across the playa mud, leaving visible tracks. This phenomenon was finally observed and documented in 2014 after decades of speculation.

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