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Unit #8 Quiz #3

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  1. Unit #8 Quiz #3 Grade: «grade» «subject» Subject: «date» Date:

  2. 1 A blue whale using sound for communication would probably create which of the following sounds A High pitched between 0 and 100 dB B Low pitched between 0 and 100 dB C Low pitched between 100 and 200 dB D High pitched between 100 and 200 dB

  3. 2 Dugongs can be found near: A Florida B New England C West Africa D Australia

  4. 3 The two groups of whales are A baleen & toothed B baleen & cetacean C toothed & cetacean D cetacean& pinniped

  5. 4 Which sound will travel farther in water below 100 meters A High pitched sound B Low pitched sound C Cavitation D Echolocation at 50 dB

  6. 5 All of the following help cetaceans maintain their body temperature in cold waters, EXCEPT: A large amounts of blubber B dense hair for insulation C high metabolic rates D counter current blood flow

  7. 6 All of the following countries still participate in whaling, EXCEPT: A Japan B Norway C New Zealand D Faroe Island

  8. 7 Why do large baleen whales use low frequency sound: A The low frequency sound is ideal for finding fatty copepods B They have long & solitary migrations & need to communicate over long distances C The lower frequency sounds are better for finding large & fatty prey D The low frequency sound is effective for short range communication within pods of whales

  9. 8 The lower jaw on many echolocating species is full of which macromolecule A Carbohydrates B Nucleic acids C Amino Acids D Lipids

  10. 9 Which of the following is true about toothed whales, but not baleen whales: A often solitary B use echolocation to find food C long annual migrations D largest of the marine mammals

  11. 10 Which of the following was the first cetacean (that we know of) that was severely depleted from whaling due to its slow-moving & surface dwelling habits: A Blue Whale B Bottle-nosed dolphin C Humpback Whale D Right/Bowhead Whale

  12. 11 Which of the following is a Pinneped A sea lion B dolphin C polar bear D otter

  13. 12 Which order of mammals has made the most complete transition to aquatic life A Carnivora B Cetaceans C Edentata D Pinnipeds

  14. 13 Which of the following is a Cetacean? A polar bear B dolphin C seal D sea lion

  15. 14 Zero decibels (dB) in air is approximately _________ dB in water. A -26 B 0 C 26 D 100

  16. 15 All of the following are true when comparing seals and sea lions, EXCEPT: A Sea lions have external ears B Anterior legs of seals are not useful for walking C Seals have external ears D Anterior legs of sea lions are useful for walking on land

  17. 16 Which of the following is used by cetaceans to focus/project sounds for echolocation/communication: A The melon B The fatty lower jaw C The vocal cords D The hammer and anvil of the ear

  18. 17 The following image is of: A manatees B dugongs C baleen whales D toothed whales

  19. 18 Sea otters and polar bears are in which of the following orders: A Carnivora B Pinneped C Cetacean D Serinia

  20. 19 Which species is the largest (physically) of marine mammals A seals B toothed whales C walruses D baleen whales

  21. 20 A loss of which of the following would prevent a common dolphin (toothed whale) from absorbing sound bouncing back during echolocation: A vocal cords B melon C mandibular fat D auditory bulbs

  22. 21 Polar bears can be found in the __________ region(s) A Antarctic B Temperate C Equatorial D Arctic

  23. 22 All of the following are possible side effects of emitting low frequency sounds into the oceans EXCEPT: A Mass stranding (200+ organisms) of marine mammals B Gas bubbles forming in the bloodstream, organs, and joints of aquatic mammals as a result of acute decompression syndrome C Cranial and pulmonary bleeding within aquatic mammals D energy from the sound pushing gas bubbles into the bloodstream through the tissue of the lungs

  24. 23 The International Whaling Commission (IWC) was originally established in 1942 for which of the following reasons: A To prevent the slaughter of marine mammals B To regulate the amount of whaling in order to prevent "over fishing" C To prevent the "fishing" of endangered animals such as sea otters D To assist indigenous peoples in for their right to slaughter whales, even when they are considered endangered

  25. 24 All of the following are characteristics of mammals, EXCEPT: A They are viviparous B They nurse their young C They are ectothermic D They all have hair/fur at some point in their lives

  26. 25 Which of the following sound waves represents the highest pitch sound: A B C D They are equal volume