Natural disasters

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Across
  1. 3. A violently rotating column of air that extends from a thunderstorm to the ground
  2. 5. It's when lava and gas are released from a volcano—sometimes explosively
  3. 6. It's a series of waves caused by earthquakes
Down
  1. 1. A is an overflow of water onto land
  2. 2. Huge masses of rock move beneath the Earth's surface and cause the ground to shake
  3. 4. A large rotating storm with high speed winds that forms over warm waters in tropical areas