The Nature of Science

3. the shapes of the Moon as seen from the Earth
5. scale an instrument used to measure weight
6. the use of human-made devices to replace body parts or organs
9. a close study of something to answer a question about it
10. an interpretation based on research, experience, and data; a statement that summarizes and explains the results of an investigation
13. a mechanical device that automatically does the job for which it is designed
14. a system in which something happens over and over
17. each repetition of an experiment
18. a series of steps to be followed in an investigation
19. a representation of something that can be used to show or explain how it functions
20. cylinder an instrument used to measure volume
21. balance an instrument used to measure mass
22. a collection of things or parts that interact with each other to function as a whole

1. a series of actions that occur within a system
2. lens an instrument used to magnify small objects
4. a statement about what is likely to happen in the future
7. table a chart made up of rows and columns and used for recording data
8. a two-dimensional model
10. a solid structure made up of a repeating pattern of atoms
11. loop system a system that has feedback and can modify itself
12. a smaller system that is part of a larger system
15. something that may change in an experiment
16. the information about a system's operation that is introduced back into the system
22. the distance an object travels per unit of time