Science

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Across
  1. 3. study of the earth
  2. 7. provides medium for plant growth
  3. 10. held together by its own gravity
  4. 11. can express hot or cold
  5. 13. may be referred to as torrid zone
  6. 14. envelope of gases surrounding the earth
  7. 17. funnel shaped cloud
  8. 18. equal 100 centimeters
  9. 21. smallest fundamental unit of a chemical compound
  10. 23. a process by which the surface of the earth is worn down
  11. 24. a group of linked ideas intended to explain something
  12. 25. area where subsoil is permanently frozen
Down
  1. 1. deep valley having steep sides
  2. 2. spills lava that flows downward
  3. 4. the rise and fall of sea level
  4. 5. 4th layer of the earths atmosphere
  5. 6. interchangeable with elevation
  6. 8. a branch of science used to forecast weather
  7. 9. rocks changed under great pressure or heat
  8. 12. measures atmospheric measure
  9. 15. formed as a result of geological processes
  10. 16. floats to the bottom
  11. 19. drainage of water away from land
  12. 20. the average of weather conditions over time
  13. 22. collection of tiny water droplets or ice crystals