Planet earth

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Across
  1. 3. precipitation in the form of small balls or lumps usually consisting of concentric layers of clear ice and compact snow.
  2. 4. a circular storm that forms over warm oceans.
  3. 7. a period of dry weather.
  4. 8. a natural light display in the sky that is powered by the Solar Wind as it is passing Earth.
  5. 11. an unusually large sea wave produced by undersea volcanic eruption.
  6. 12. When water overflows onto dry land.
Down
  1. 1. a vent, or opening, in Earth's surface through which lava erupts.
  2. 2. a bright flash of electricity produced by a thunderstorm.
  3. 5. the shaking, rolling or sudden shock of the earth’s surface.
  4. 6. a huge storm.
  5. 9. A tornado is a violent rotating column of air extending from a thunderstorm to the ground.
  6. 10. air in motion.
  7. 11. the sound that follows a flash of lightning and is caused by sudden expansion of the air in the path of the electrical discharge.
  8. 12. cloud that occurs at ground level instead of in the sky.