Coral Reefs Test Review I aqsci

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Across
  1. 1. coral ___ is the term for when a coral looses its color due to dropping its symbiotic algae
  2. 4. reefs only grown about 1-2 cm a year!
  3. 5. coral IS considered an ____ even though it is not cute and cuddly
  4. 7. a type of reef that generally starts as a reef around a volcanic island, but then the island sinks!
  5. 9. a large amount of coral connected together is called a __
  6. 12. a type of reef that grows close to the shoreline
  7. 13. reefs provide ____ to coastlines
  8. 14. describe the rate at which coral grows
  9. 16. a type of reef that grows far out and disconnected from the shoreline
  10. 17. describe the clarity of the water needed for coral to form
  11. 18. when a coral ___, it hardens and becomes a good base for other coral to build on top of it
  12. 19. small organisms that make up coral reefs
  13. 20. zooxanthellae provide ______, a cleaning service and color to the coral
Down
  1. 2. an example of what coral eats
  2. 3. describe the depth needed for coral to form
  3. 4. __ carbonate is the hard material that makes up the exoskeleton of coral reefs
  4. 6. the ___ reef zone is the highest point of the reef and where the waves actually break over the reef
  5. 8. the ___ reef zone is where the you will find the reef wall falling off and LOTS of different coral species
  6. 10. the ___ reef zone is the area between the crest and the shore
  7. 11. the photosynthetic algae that lives on the coral is called _____
  8. 15. describe the temperature necessary for coral to form