Across
- 2. on the scale that can be directly seen and measured, from a colony of bacteria up to the size of a planet
- 3. describes ideas that are often presented as scientific but which are not supported by scientific evidence - examples include astrology, phrenology, alchemy, crystal healing, creationism, and parapsychology
- 4. the unwritten rules that govern everything in the universe
- 7. describes only what actually occurs without explanation, opinion or bias
- 9. on the scale of atoms and molecules,
- 11. when identical results of an experiment or observation can be obtained by anyone performing the same experiment or observation in the same way
- 14. an explanation that is supported by evidence
- 16. a quantity that is measured or changed in an experiment or observation
- 17. material that has mass and takes up space
Down
- 1. the single variable that is changed to test its effect
- 5. a process of learning that constantly poses questions and tentative answers that can be evaluated by comparison with objective evidence
- 6. a stated decision whether or not the results of experiments or observations confirm an idea or hypothesis
- 8. a tentative explanation for something, or a tentative answer to a question
- 10. a situation specially set up to observe how something happens or to test a hypothesis
- 12. the process of learning through asking questions
- 13. a set of directions on how to perform an experiment
- 15. a statement asserting something to be true