Science and Geography

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Across
  1. 5. The task or service that a system performs.
  2. 7. When a force moves an object.
  3. 10. (2 words) The ratio of output force to input force.
  4. 11. A group or type of people.
  5. 12. The study of human population statistics.
  6. 14. The replacement of human workers by technology.
  7. 15. The force, energy, or raw materials put in to a system.
  8. 17. Land with fertile soil for growing crops.
  9. 19. Doing something without wasting energy.
  10. 20. (2 words) The number of live babies born per 1000 people in a population.
  11. 21. The unwanted process of turning farmland into desert.
  12. 23. Areas of population outside of cities.
  13. 24. (2 words) the number of people per square KM.
Down
  1. 1. The force that resists the movement of objects sliding.
  2. 2. The pivot point of a lever.
  3. 3. The unwanted process of removing forests.
  4. 4. A concept or goal that allows for processes to continue far into the future.
  5. 6. Areas of populations inside cities or towns.
  6. 8. The system of goods and services being bought / sold.
  7. 9. The quantity of force.
  8. 13. (2 words) A device that requires a single force to work.
  9. 16. The ability to apply a force to move an object a distance.
  10. 18. The unit used to measure force.
  11. 22. Any push or pull.