Across
- 2. negative accelerataion
- 4. happens when scientist's expectations change the results
- 6. an exact quantity that people agree as a comparison
- 8. factor that does not change in an experiment
- 9. a possible answer to a question or problem
- 14. to go faster over time
- 15. rate of change of velocity
- 18. tests the effect of one thing on another using a control
- 19. anything that takes up space and has mass
- 20. an idea, event, or object to help people understand
Down
- 1. SI unit of temperature
- 3. a measurement of the quantity of matter in an object
- 5. statement about nature, seems true all the time
- 7. this includes distance and direction
- 8. the standard by which results can be compared
- 10. right now
- 11. speed with direction
- 12. a picture of data
- 13. the distance an object travels per unit of time
- 16. a change in an objects position relative to a reference point.
- 17. mass per unit of volume