Across
- 1. Imaginary line dividing Earth into Northern and Southern Hemispheres
- 4. Ocean zone with no sunlight
- 5. Deep, narrow valley on the ocean floor
- 8. How tightly packed matter is
- 9. Connected ocean covering Earth
- 10. Large movements of ocean water
- 13. Warm Atlantic current that helps heat Europe
- 14. Gas absorbed by oceans and used in photosynthesis
- 15. Movement of nutrient-rich deep water to the surface
- 17. Wind-driven movement of ocean water
- 21. Ocean zone where sunlight supports photosynthesis
- 22. Wind-created moving ridges of water
- 25. Tide with the smallest tidal range
- 26. Amount of dissolved salt in ocean water
- 27. Global system of deep-water circulation
- 28. Deep, flat region of the ocean floor
- 29. Ocean strongly influenced by monsoon weather
Down
- 2. Trait that helps an organism survive
- 3. Smallest and coldest ocean
- 6. Ability to produce light in the deep ocean
- 7. Process plants use sunlight to make food
- 11. Cold, salty water becomes this
- 12. Dissolved gas needed by marine organisms
- 13. Force that causes tides
- 16. Force created by the weight of water above
- 18. Daily rise and fall of sea level caused by gravity
- 19. Deepest ocean zone including trenches
- 20. Largest and deepest ocean
- 23. Tide with the greatest difference between high and low water
- 24. Twilight zone with very little light