Across
- 1. - Phase of matter with no fixed shape or volume (3)
- 2. - A push or pull on an object (5)
- 4. - One of the states of water (3)
- 8. - The smallest particle of a chemical element (4)
- 9. - Water in its solid state (3)
- 10. - Natural science that studies life and living organisms (7)
- 11. - Center of an atom (6)
- 13. - Path of one body around another in space (5)
- 14. - Natural satellite of the Earth (4)
- 18. - Brightest star in the night sky (3)
- 19. - The force that attracts objects towards the center of the earth (8)
- 21. - Change from gas to liquid (10)
- 24. - Chemical symbol for water (3)
- 25. - Measurement of how hot or cold something is (10)
- 26. - Change of liquid to gas (10)
- 28. - Vital process in plants using sunlight (11)
Down
- 1. - Study of rocks and Earth's physical structure (9)
- 3. - Period of time when dinosaurs existed (8)
- 5. - A period of 24 hours (3)
- 6. - A phase of matter with a definite volume but no definite shape (6)
- 7. - A basic unit of life (4)
- 10. - Substance with pH level more than 7 (4)
- 12. - Substance that cannot be broken down into simpler substances (7)
- 15. - The gas we breathe in (6)
- 16. - The science of plants (8)
- 17. - Instrument used to see distant objects in space (8)
- 20. - Opposite of cold (3)
- 22. - Unit of measure for electric current (3)
- 23. - Basic substance that makes up all things (6)
- 27. - Opposite of positive in electricity (8)