what is thunder – Thulium Zone

Question: what is thunder
- Keywords:
  earth,
  thunder,
  weather
Asked by 199thuc23 to Ryan, Liad on 16 Jun 2015.
- Ryan Cheale answered on 16 Jun 2015:
  
  Thunder is the result of lightning, because lighting heats up the surrounding air it rapidly expands and you hear it as a rumble!

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