Chapter 1

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Across
  1. 2. describes the formation of the solar system
  2. 6. the process by which we test hypotheses
  3. 8. a well tested and widely accepted explanation
  4. 9. geosphere, atmosphere and hydrosphere
  5. 10. the study of the the weather
  6. 12. the innermost layer of the earth
  7. 15. the system of all the rock and sediment
  8. 16. the system of all living things on earth
Down
  1. 1. the study of the earth
  2. 3. prediction made on the basis of observations
  3. 4. the span of time since the formationof earth
  4. 5. the system made up of the layers of air
  5. 7. the system made up of all of earth's water
  6. 11. the study of earth's oceans
  7. 13. the study of earth's materials and their history
  8. 14. the study of the earth and space