natural disaster

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Across
  1. 4. A release of some oil into the environment, due to human activity, and is a form of pollution.
  2. 5. A fire burning uncontrolled in the forest.
  3. 6. A long high sea wave caused by an earthquake or other disturbance.
  4. 7. A violent shaking of the ground, sometimes causing great destruction.
Down
  1. 1. A prolonged period of abnormally low rainfall, leading to a shortage of water.
  2. 2. A storm with a violent wind.
  3. 3. An overflowing of a large amount of water beyond its normal limits.