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Across 4. The water _____________ is the series of natural processes by which water continually moves throughout the hydrosphere. 5. Ice is less ______________________ than liquid water 7. Water is often called the ___________________ solvent because of its ability to dissolve so many substances. 9. 97% of the water on the Earth can be found in the _________________. 10. The ____________________________ is all of the water on and below Earth's surface and in the atmosphere. 12. Water is a _____________________molecule because the oxygen atom and the hydrogen atoms have slightly opposite charges. 13. ____________________ is the only substance in nature that exists as a solid, a liquid, and a gas. 14. __________________________ is the evaporation of water from plants. 18. In our m&m experiment the different liquids that we dropped the candies into was the _________________ variable. 19. Water has a high _____________________ heat. 20. density = mass/ _________________ 21. What should always go on the x axis of a line graph? 22. 0 degrees Celsius is the _________________________ point of water. 23. 212 degrees Fahrenheit is the ___________________________ point of water. 24. The ability to put more drops of water on a penny than drops of alcohol demonstrated this property of water.

Down 1. A water molecule is made up of two ___________________ atoms and one oxygen atom. 2. The _______________ and gravity drives the water cycle. 3. Precipitation can occur as rain, snow, sleet, or even _______________. 4. ______________________ is the process of a gas changing to a liquid. 6. _______________________ is the process of a liquid changing to a gas at the surface of the liquid. 8. In the ________________________ effect water vapor helps to trap warmth from the Sun. 11. 32 degrees Fahrenheit is the ___________________________ point of water. 15. The oxygen atom in a water molecule has a slightly ______________ charge. 16. Water molecules sticking to the sides of a glass test tube is which property of water? 17. 100 degrees Celsius is the _______________________ point of water.