Across
- 4. How much of a water molecule is oxygen?
- 9. What was one of the most common ways Egyptians cleaned their water?
- 11. In dollars how much do 1,000 gallons of water cost?
- 12. What is something that can dissolve almost anything?
- 14. How much of a water molecule is hydrogen?
- 15. How much of the earth's surface is covered in water?
Down
- 1. What is the gas form of H2O?
- 2. What is the liquid form of H2O?
- 3. How much of earth's fresh water is frozen?
- 5. Why is water sticky?
- 6. How much of earth's water is salt water?
- 7. What it the name of a water molecule?
- 8. How much of earth's water is fresh?
- 10. What is the solid form of H2O?
- 13. How much of earth's fresh water is unfrozen?