No. Question Page 



63. What is bioluminescence? 77 



64. What is the continental shelf? 78 



65. Has an efficient method of obtaining fresh water from the 



sea been invented? 79 



66. Why is the Cape Hatteras area known as the graveyard 



of ships? 81 



67. How does an oceanographic ship anchor to take observa- 

 tions in the deep ocean? 83 



68. How much power (energy) is in a wave? 84 



69. Are the rise and fall of tides used to develop power? 85 



70. Who is the most famous oceanographer? 86 



71 . Does oceanography include the study of lakes and streams? 87 



72. What is plankton? 88 



73. Are there really sea monsters? 90 



74. What is sonar? 91 



75. How deep can submarines operate safely? 92 



76. How do submarines navigate when submerged for weeks at 



a time? 93 



77. How fast can a porpoise swim? Is it the fastest swimming 

 "fish"? 94 



78. What is the pressure at the deepest part of the ocean? .... 95 



79. What are turbidity currents? 96 



80. What is the most important discovery made about the 

 oceans? 97 



81. What is the MOHO? 98 



82. How much do scientists really know about the oceans? ... 99 



83. What are ice islands? 100 



84. What are the best materials to use for building a pier? .... 101 



85. What is the hydrologic cycle? 103 



86. What is the DSL? 104 



87. How thick is the sediment at the bottom of the ocean? 105 



88. What is a storm surge? 106 



89. What makes a very slight swell (wave) become much higher 

 when it breaks on the shore as surf? 107 



90. What is "ship route forecasting"? 108 



91. How accurately can oceanographers predict ice formation, 



size, and movement? 109 



92. What is the International Ice Patrol? 110 



93. Who owns the water areas offshore and how far? 112 



94. Is there any danger of overfishing? 113 



ix 



