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