Science Crossword

3. an area of land that all drains to the same spot
6. the range which mount hood is part of
7. liquid rock beneath the earth's surface
9. the abbreviation for dissolved oxygen
10. the San Andreas fault in California is this type of plate boundary
13. the center of an earthquake on the surface of the earth
17. the area of land near a river
18. a chemical reaction where fuel and oxygen turn into energy, carbon dioxide, and water vapor
19. when one stream feeds into a larger one
20. the most common type of plastic made today
22. when an oceanic plate dives under a continental plate
23. when a material is worn away by things such as wind or water
24. Mr. Campbell grew up in this town Washington
25. liquid rock above the earth's surface

1. a living part of the ecosystem
2. when a material is decomposed by organisms
4. when sediment is placed down
5. organisms without a spine that can be used to indicate the health of a stream
8. a name for a group carbon atoms, often the result of burning
11. a measure of how much sediment is in the water
12. a place where life does not exist because all the oxygen has been used up by decomposing algae
14. when water travels on the surface of the land, sometimes carrying pollution with it
15. a non-living part of the ecosystem (wind, sunshine, temperature)
16. 78% of the atmosphere
21. Mr. Smith grew up in this town in California