Across
- 1. materials become dry when exposed to air
- 3. liquid water changes into a gas when it dries
- 4. any substance that comes from the earth
- 7. a slanted surface
- 9. a liquid earth material
- 10. to take up less space
- 11. skin-like surface on liquids that pulls it together into a sphere
- 12. a person who studies water
- 16. when water soaks into a material
- 17. when water vapor touches a cool surface it becomes a liquid
- 18. materials that sink are this
- 19. shape a drop of water takes on a flat surface
Down
- 1. when water is heated it becomes a gas
- 2. materials that float are this
- 5. describes the level of purity in a sample of water
- 6. the movement of a liquid over a surface
- 8. the repeating sequence of evaporation and condensation of water causing precipitation
- 13. area of a liquid exposed to the air
- 14. gets bigger, takes up more space
- 15. characteristics of material, something you observe; color, taste, smell