Across
- 3. green pigment in plants
- 5. element in all living things
- 6. tool to see tiny objects
- 8. gases around Earth
- 9. gas in most of the air
- 10. a test to learn something
- 12. an educated guess
- 14. how packed something is
- 19. group of stars
- 22. solid found in rocks
- 23. icy object in space
- 25. rain, snow, or hail
- 27. tool to see far objects
- 29. path for electricity
- 30. energy in waves
Down
- 1. using senses to learn
- 2. gas turning to liquid
- 4. stores electrical energy
- 7. plants making food with sunlight
- 11. remains from long ago
- 13. lightest element
- 15. liquid turning to gas
- 16. trait to help survive
- 17. solid with repeating shape
- 18. information collected
- 20. how hot or cold
- 21. force on an area
- 24. group of similar organisms
- 26. energy for lights and devices
- 28. wearing away of land