Across
- 3. to see or watch closely
- 4. to give evidence
- 5. to study carefully or in detail
- 7. a test or procedure done for the purpose of learning or proving something
- 9. a judgment that you form after considering all evidence
Down
- 1. to incorporate a parallel experiment as a standard of comparison in a scientific study
- 2. an idea or theory that is based on some evidence but has not yet been proven; an educated guess
- 6. a way of doing something
- 8. an inactive substance used in a controlled experiment to test the effects of an active substance