Across
- 2. Nonliving factors in an ecosystem
- 8. This equals 24 hours
- 11. SI unit for length
- 13. A variable that you change on purpose in an experiment
- 16. equal day and equal night
- 19. The number that appears most often in a data set
- 21. PE + KE = ____________ energy
- 22. Nearest star to Earth
- 23. The largest planet
- 24. The variables in an experiment that should be kept the same
- 26. SI unit for mass
- 28. A force that keeps planets in orbit
- 29. A possible explanation for an observation that can be tested
Down
- 1. Equals a year
- 3. The number of variables that you should change on purpose in an experiment.
- 4. Organisms that only eat meat
- 5. A type of observation using your senses, not numbers
- 6. The middle number in a set of data
- 7. Scientific investigations
- 9. A variable that you measure or observe during an experiment
- 10. Gas changes to a liquid
- 12. Living factors in an ecosystem
- 14. The type of energy that is stored
- 15. Planets closest to the sun, made of rocks (no spaces)
- 17. The type of eclipse that occurs when the moon moves into Earth's shadow
- 18. The type of eclipse when the moon's shadow appears on Earth's surface
- 20. Liquid changes to a gas
- 22. The season when the Northern hemisphere is tilted towards the sun
- 25. Sixth planet from the sun
- 27. Red planet
- 28. Material the outer planets are made of