Across
- 4. the observing,measurements,and data that other people gather
- 6. information gathered by and observation
- 7. the process of obtain evidence using the senses
- 8. the factor that changes as a result of manipulation
- 9. a control is a system for which the expected change or outcome is well known and is measured or observed
Down
- 1. in a scientific investigation, the factor that is deliberately manipulated
- 2. In mathematics, a quantity that has a fixed value; something that does not vary.
- 3. a testable idea or explanation that leads to scientific investigation
- 4. and organised procedure to study something under controlled conditions
- 5. the knowledge obtained by observing natural events