Natural Phenomena

12345678910
Across
  1. 7. A powerful thunderstorm that appears as a rotating, funnel shaped cloud
  2. 8. Small earthquakes which are followed by larger ones
  3. 9. When two tectonic plates slide against each other on a flat surface
  4. 10. Located directly above the hypocenter
Down
  1. 1. Violent and destructive storm
  2. 2. The hardest layer of the earth's crust
  3. 3. The scale used to measure the intensity of an earthquake.
  4. 4. The state of a volcano when it is not active or when it is extinct
  5. 5. An opening in the earth's crust through which hot molten rock, ash and gases erupt
  6. 6. Caused by the gravitational pull of the moon and the sun