Oceanography Crossword Puzzle

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Across
  1. 3. a deposit of clay, silt, and sand formed at the mouth of a river where the stream loses velocity and drops part of its sediment load. No delta is formed if the coast is sinking or if there is an ocean or tidal current strong enough to prevent sediment deposition.
  2. 4. Formed under very intense heat and pressure over long periods of time.
  3. 6. An elongate accumulation of sediment formed in the shallow coastal zone and separated from the mainland by some combination of coastal bays and their associated marshes and tidal flats.
  4. 7. Scattered along the floor of the ocean are underwater mountains.
  5. 8. Long, narrow crevices, or cracks.
  6. 10. A ringlike coral island and reef that nearly or entirely encloses a lagoon.
  7. 12. Erosion by glaciers deposition of sediment, tectonic activity.
  8. 15. At the edge of a continental shelf.
  9. 18. Come from weathering and erosion in the mountains.
  10. 19. Hard solid substance composed of one or more minerals.
  11. 21. Come from hot fluid magma that cools and hardens.
  12. 25. A shallow body of water, especially one separated from a sea by sandbars or coral reefs.
  13. 26. A coral reef formed close to a shoreline.
  14. 28. A sand or gravel bar or spit that connects an island with another island or an island with the mainland.
Down
  1. 1. Result from chemical reaction in seawater which cause minerals to come out of solution and form particles that settle to the bottom.
  2. 2. A small, irregular organic reef with a flat top forming a part of a reef complex.
  3. 5. Large flat areas on the ocean floor.
  4. 9. Marine action, wave erosion or biological activity.
  5. 11. A long, narrow ridge of coral or rock parallel to and relatively near a coastline, separated from the coastline by a lagoon too deep for coral growth.
  6. 13. Under water mountains.
  7. 14. An area that is made of large amounts of sediments.
  8. 15. The flat part of the continental margin, covered by shallow ocean water.
  9. 16. Sediment that comes from outer space, usually in cosmic dust that result from collisions of asteroids, comets, meteorites, etc.
  10. 17. A description of the shape of the ocean floor, its characteristics and major features.
  11. 20. Formed from other rocks or minerals already present on or near the Earth's surface.
  12. 22. Naturally occurring inorganic solids composed of one or more elements naturally occurring in the earth's crust.
  13. 23. Originate from biological organism shells or skeletons and contain silica or calcium carbonate.
  14. 24. Flat topped seamounts.
  15. 27. An unusual looking volcanic island.