the physical world

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Across
  1. 2. a natural and continuous flow of water in a long line across a country into the sea
  2. 6. a storm that has very strong fast winds and that moves over water → cyclone, typhoon, tornado► see thesaurus at storm, wind
  3. 7. to cover a place with water, or to become covered with water
  4. 9. a very large round object in space that moves around the Sun or another star
  5. 10. a large mass of land surrounded by sea
Down
  1. 1. a large area of land where it is always very dry, there are few plants, and there is a lot of sand or rocks
  2. 3. a mountain with a large hole at the top, through which lava (=very hot liquid rock) is sometimes forced out
  3. 4. a sudden shaking of the Earth’s surface that often causes a lot of damage
  4. 5. a tropical forest with tall trees that are very close together, growing in an area where it rains a lot
  5. 8. one of the very large areas of sea on the Earth’s surface