So far in Science...

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Across
  1. 3. subatomic particle with no charge
  2. 4. a stream that feeds into a larger river, lake, etc.
  3. 7. what elements make up water
  4. 9. the crest of land that separates one watershed from another
  5. 11. when water molecules attract to each other
  6. 12. the state where water molecules are close to each other buy moving around
  7. 13. the state where water molecules are moving quickly and freely
  8. 16. land that is saturated with water for at least part of the year
  9. 18. a molecule that has electrically charged sides, like a water molecule
  10. 21. measures how acidic or alkaline a substance is
  11. 22. where protons and neutrons are found in the atom
  12. 23. the basic building block of matter
  13. 24. measures the amount of salt in water
Down
  1. 1. subatomic particle with a negative charge
  2. 2. the process where an excess of nutrients in the water causes an excessive growth of algae
  3. 5. all the factors that are living, like animals and plants
  4. 6. all the factors that are non-living, like the sun and water
  5. 8. the name of our watershed in Virginia
  6. 10. measures the clarity of water
  7. 14. the land area that drains water to a common body of water
  8. 15. Besides the Potomac, Rappahannock and York, one of the rivers in Virginia that is part of our watershed
  9. 17. when water molecules attract to different substances
  10. 18. subatomic particle with a positive charge
  11. 19. the place where the salt water from the ocean and the fresh water from the rivers mix
  12. 20. the state where water molecules are vibrating close together