Printable ocean trivia questions and answers give knowledge on the ocean around the world. When salty water from the ocean mixes with freshwater, a particular place known as an estuary is fashioned Ocean Trivia Questions. The ocean, often known as the sea or the world ocean, is a body of salt water that makes up 97% of the planet’s water and covers around 70.8% of its surface. Any of the big bodies of water that the world ocean is often split into can also be referred to as an ocean. Enjoy printable ocean trivia questions and answers. There are five distinct names used to refer to the ocean’s five regions: the Pacific (biggest), Atlantic, Indian, Southern (Antarctic), and Arctic (the smallest). Approximately 361,000,000 km2 (139,000,000 sq mi) of the globe is covered with water. Since the ocean is the main part of the hydrosphere, it is essential to life as we know it. The ocean affects climate and weather patterns, the carbon cycle, and the water cycle by serving as a significant heat reservoir.
There are four main oceans, the Pacific, Atlantic, Indian, and Arctic. The Pacific Ocean is the biggest and covers a 3rd part of the Earth, which you will find here in this ocean trivia question. Based on physical and biological factors, oceanographers categorize the ocean into several vertical and horizontal zones. Explore printable ocean trivia questions and answers general knowledge online through the free quiz. The water column in the open ocean, from the surface to the ocean floor, is known as the pelagic zone. Depending on the depth and the amount of light, the water column is further divided into several zones. In the open ocean, the photic zone extends from the surface to a depth of 200 m, or 1% of the surface light, where photosynthesis may take place. Thus, the photic zone has the greatest diversity of life. Utilizing light, water, carbon dioxide, and nutrients, plants and tiny algae (free-floating phytoplankton) produce organic matter through photosynthesis.
The ocean is a steady body of salt water that covers greater than 70 p.c of the Earth’s floor. Ocean currents govern the world’s climate and churn a kaleidoscope of life of Ocean Trivia Questions. 50% of the oxygen in the earth’s atmosphere is produced through ocean photosynthesis. Bookmark printable ocean trivia questions and answers. The food supply that supports the majority of the ocean ecosystem originates in this higher sunlight zone. Only a few hundred meters of the water are illuminated; the rest is frigid and gloomy. With a depth of a few hundred meters or less, the continental shelf is shallower when the ocean approaches dry land. The influence of human activities is greatest on the continental shelf.
Geographers divide the ocean into 5 main basins: the Pacific, Atlantic, Indian, Arctic, and Southern Oceans these trivia questions are available. The amount of solar energy that reaches the ocean surface affects ocean temperature. Surface temperatures in the tropics can exceed 30 °C (86 °F). Discuss the printable ocean trivia questions and answers. The equilibrium temperature at the poles, where sea ice occurs, is roughly 2 °C (28 °F). Everywhere in the ocean, the temperature of the deep waters ranges from 2 °C (28 °F) to 5 °C (41 °F). Ocean currents are produced by the constant circulation of water in the seas.
The factors acting on the water, such as temperature variations, atmospheric circulation (wind), the Coriolis effect, and changes in salinity, are what cause these directed motions of seawater. Surface currents are brought about by the wind and waves, whereas tides are the source of tidal currents. The Gulf Stream, Kuroshio Current, Agulhas Current, and Antarctic Circumpolar Current are all significant ocean currents. Collect printable ocean trivia questions and answers. Massive volumes of water and heat are collectively transported around the world by currents. By transporting these pollutants from the surface into the deep ocean, this circulation has a substantial influence on the global climate as well as the absorption and redistribution of pollutants like carbon dioxide.
Printable ocean trivia questions and answers
1. Where is the Bermuda Triangle located?
2. During winter Which ocean is almost completely covered in the sea ice?
The Arctic Ocean
3. The Southern Ocean includes the area of water that encircles what continent?
4. How many animals are in the ocean?
Scientists estimate that about one million species of animals live in the ocean. But most of them—95 percent—are invertebrates, animals that don’t have a backbone, such as a jellyfish and shrimp.
5. What is the deepest point of the Mariana Trench?
11000 meters (36000 feet)
6. What is the Pacific Ocean is surrounded by?
The Pacific Ring of Fire, has a large number of active volcanoes.
7. The second-largest ocean on Earth is the Atlantic Ocean, how much does it cover of the Earth’s surface?
8. What is the earth’s longest chain of underwater mountains?
The Mid-Ocean Ridge
9. The world’s oceans contain enough water to fill a cube with edges how many kilometers in length?
Over 1000 kilometers (621 miles)
10. What is caused by the Earth rotating while the Moon and Sun’s gravitational pull acts on ocean water?
11. What are the 7 oceans called?
Since the 19th century, the term has been taken to include seven oceanic bodies of water:
the Arctic Ocean.
the North Atlantic Ocean.
the South Atlantic Ocean.
the Indian Ocean.
the North Pacific Ocean.
the South Pacific Ocean.
the Southern (or Antarctic) Ocean.
12. What percent of oceans cover the Earth’s surface?
more than 70%
13. Who became the first female to fly solo across the Atlantic Ocean in 1932?
14. What is the third-largest ocean on Earth?
The Indian Ocean
15. What percent of the earth’s surface is covered by the Indian Ocean?
16. How deep are the deep ocean?
Officially anything deeper than just 200 meters is considered the “deep sea”, but the average depth of the entire ocean is about 3.5km, and the deepest point – the Challenger Deep in the Mariana Trench, in the western Pacific – is a little short of 11km down.
17. What percent of life on Earth is aquatic?
94% of the Earth’s living species that exist within the oceans
18. What percentage of the Earth’s surface is the Pacific Ocean, the largest ocean on Earth covers?
19. The Pacific Ocean’s name has an original meaning of
20. What are the 10 largest oceans?
Top 10 World’s Largest Oceans and Seas
The Pacific Ocean. 166,242,000.
Atlantic Ocean. 86,557,800.
The Indian Ocean. 73,427,800.
Arctic Ocean. 13,223,800.
East Vietnam Sea. 2,974,600.
Caribbean Sea. 2,515,900.
Mediterranean Sea. 2,510,000.
The Bering Sea. 2,261,100.
The sea of Okhotsk. 1,527,570
The Gulf of Mexico. 1,507,600
21. How old is the ocean?
About 3.8 billion years ago
22. What portion of the US lies beneath the ocean?
23. What is the distance of the underwater Mid-Ocean Ridge, the world’s longest mountain chain?
24. Over vast periods of time, our primitive oceans formed. The water remained a gas until the Earth cooled below ____ degrees Fahrenheit.
25. What is the biggest creature in the ocean?
Blue Whale Blue whales
26. How many animals are in the ocean?
100 million is the current estimated figure, and this includes fish, mammals, and sea birds.
27. There are more historic artifacts under the sea than in all of the world’s museums. True/ False?
28. When __________combine, it becomes denser than the rest of the water around it, enabling it to form a lake or river that flows beneath the sea.
Saltwater and hydrogen sulfide
29. What are the five oceans of the world?
The Pacific Ocean | 168,723,000 square kilometers.
The Atlantic Ocean | 85,133,000 square kilometers.
The Indian Ocean | 70,560,000 square kilometers.
The Southern Ocean | 21,960,000 square kilometers.
The Arctic Ocean | 15,558,000 square kilometers.
30. Does the ocean have an end?
From an oceanographic point of view, they have no end, they are all connected.
31. How far down is the Titanic?
32. What’s the smallest ocean on Earth?
The Arctic Ocean. With an area of about 6.1 million square miles, the Arctic Ocean is about 1.5 times as big as the United States.
33. What percent of our planet’s oxygen is produced by the ocean?
34. The Mariana Trench is located to the east of what island?
The Mariana Islands in the western Pacific Ocean,
35. The Atlantic Ocean’s name refers to what Greek mythology?
36. Where did ocean water come from?
This theory and research contend that the ocean was created by the escape of gases, including water vapor, from the Earth’s molten rocks into the atmosphere that has been encircling the cooling planet ever since time immemorial. Rain started to fall after the Earth’s surface cooled to a temperature below the boiling point of water, and it rained for centuries, covering the lowlands.
37. Who is famous for ocean dating?
Famous Ocean began dating Chicago-based ‘Instagram’ sensation
38. How many islands are there in the Pacific Ocean, the world’s largest ocean?
39. How old is the water we drink?
4.6 billion years
40. According to the World Register of Marine Species how many accepted species (with new marine life being discovered every day) are there?
41. What is the coldest sea on earth?
42. What do we call 85% of the area and 90% of the volume constitutes the dark, cold environment?
The deep sea.
43. What is it called when the sun is shining and it’s raining?
A sunshower or sun shower is a meteorological phenomenon in which rain falls while the sun is shining.
44. What is the rarest sea creature?
Allonautilus scrobiculatus, a rare species of nautilus, a marine mollusc
45. Who invented water?
46. What ocean has the most sharks?
47. Which country puts the most plastic in the ocean?
48. Does it rain in the sun?
On the planets and moons of our solar system, rain comes in a variety of forms. Electrified gas also “rains” on the sun from enormous magnetic loops in its outer atmosphere.
49. What’s the ugliest fish in the world?
50. How much life is in the ocean?
An estimated 50-80% of all life on earth is found under the ocean surface and the oceans contain 99% of the living space on the planet.
51. Which ocean is saltiest?
52. Why is ocean water salty?
Rocks on land are the source of salt in the ocean. Carbon dioxide from the surrounding air has been dissolved in the rain that falls on the soil. Due to the formation of carbonic acid from water and carbon dioxide, this results in a slight acidity in the rainwater.
53. Will the earth ever run out of water?
It is possible for water on Earth to escape into space as a vapor in our atmosphere. It’s crucial to keep in mind that clean, fresh water is not always accessible where and when humans need it, even though our world as a whole may never run out of it. In fact, only six nations contain more than half of the world’s fresh water.
54. Will Titanic be raised?
It is impossible to raise the Titanic wreck. It is located in 12,500-foot-deep water, which by itself poses a task that is almost impossible. In addition, the ship is split into two sections, both of which are severely corroded from spending more than a century below.
55. What is the most expensive fish in the world to eat?
Japan tuna is the world’s most expensive edible fish
56. What is the role of the Sun in the water cycle?
The energy or heat that practically everything on Earth need is provided by the sun. Heat causes water that is liquid or frozen to evaporate into water vapor gas, which rises to great heights in the atmosphere to form clouds, which travel across the planet and release rain and snow. This procedure plays a significant role in the water cycle.
57. How many ocean animals die each day?
This corresponds to over a million bags each minute globally or 150 bags per person per year. These are the marine animals that are found to be entangled in plastic each year, killing 100,000 of them.
58. Will the ocean be empty by 2048?
If humans keep fishing at the current pace, there will be no more fish left in the oceans by 2048.
59. How big is a Megalodon?
Megalodon had a bit greater strength than a Tyrannosaurus rex and could reach lengths of up to 60 feet (18 meters). Between 16 million and 2 million years ago, marine creatures plagued the waters.
60. Which shark is the most dangerous?
Great white shark
61. Sharks can smell blood from up to around what distance?
A quarter of a mile away.
62. Why is ocean water salty?
Ocean salinity, or salt in the sea, is mostly brought on by rain pouring mineral ions from the land into the water. Rainwater becomes somewhat acidic as a result of atmospheric carbon dioxide dissolving in it. Rocks are weathered by rain, which releases mineral salts that separate into ions.
63. What animals live on the ocean floor?
These include creatures like crabs, worms, sea stars, and sea cucumbers. Sponge, hard and soft coral, and certain anemones are examples of other organisms that require a solid object to adhere to the bottom.
64. What is the process called when the molecules of liquid water change into water vapor and move into the air by the heat of the Sun?
65. How cold is the bottom of the ocean?
Around 0-3 °C
66. What is the most intelligent shark?
Great white sharks
67. What happens to water when it evaporates?
Evaporation happens when a liquid substance becomes a gas. When water is heated, it evaporates.
68. What’s the rarest fish in the world?
Devils Hole pupfish
69. What is the difference between Ocean and Sea?
Typically, seas are partially enclosed by land.
70. Which sea was first named by the ancient Greeks who called it “Inhospitable Sea.”?
71. Why is it called the Black Sea?
Due to its treacherous navigation and the violent tribes that called its coastlines home, the sea earned its reputation. The Black Sea is almost 150 meters deep, and for about two kilometers, hydrogen sulfide gas fills its waters.
72. How deep can a whale dive?
The deepest recorded dive was 2,992 meters, breaking the record for diving mammals.
73. Who named the oceans of the world?
Abraham Ortelius named the ocean Maris Pacifici after Ferdinand Magellan, who had described it as “a pacific sea” during his journey from 1519 to 1522.
74. How many sharks are in the ocean?
There are more than 500 species of sharks in the world’s oceans—and there may be many more that scientists still have not identified.
75. What is the ugliest sea creature?
76. Which jellyfish can kill you?
77. Why is sea life important?
The seas play a key role in the collection and storage of carbon dioxide as well as serving as a substantial supply of oxygen for our planet. Important ecological services provided by marine organisms include the supply of food, medicine, and livelihoods. Additionally, they promote leisure pursuits and travel across the globe.
78. What did dinosaurs drink?
While forest dinosaurs drank mineral-rich water that had seeped through the rocks and picked up volcanic salts along the way, floodplain dinosaurs slurped from nearby rivers.
79. What is the most dangerous sea animal?
Australian box jellyfish
80. What is the rarest of all marine mammals?
The little vaquita porpoise
81. What percentage of trash in the ocean comes from land?
Approximately 80 percent of ocean plastics come from land-based sources and the remaining 20 percent from marine sources.
82. A large number of islands referred to collectively is what?
83. The Amazon River is connected to which major ocean?
84. What is Smack?
A mass of jellyfish floating together called
85. When is Endangered Species Day?
86. An estuary connects the ocean to what?
87. How long can it take for a plastic bag to decompose?
10 to 1,000 years
88. What is the minimum threshold for the depth of a deepwater operation?
89. “Ghost fishing” refers to what?
Lost Nets Continuing To Catch Fish
90. The OSPAR Convention is short for what?
Oslo And Paris
91. What percentage of trash in the ocean is made up of plastic?
92. The Bering Strait lies between which two continents?
North America And Asia
93. One dump truck of plastic waste enters our ocean every
94. What role does a skimmer play in cleaning up ocean pollution?
Collecting Floating Pollution
95. How much trash has been found floating on the ocean surface?
In the water, there are 5.25 trillion particles of plastic trash. 269,000 tons of that mass float on the surface, while the deep sea is covered in four billion plastic microfibers per square kilometer.
96. Which oceanic zone allows photosynthesis?
97. Every day, how much trash does the average American throw away in the U.S.?
The average American generates 4.40 pounds of waste each day, or 5.91 pounds total, with roughly 1.51 pounds of it being recycled, according to the EPA.
98. A seamount would be found in what part of the ocean?
Near The Coast
99. Brine pools in the ocean have an unusually high level of what?
100. Too much sunlight can damage the algae that live inside coral in shallow water. To protect the algae, the corals fluoresce – this creates proteins that act as a sort of sunscreen for the algae. True/ False?
101. The Strait of Gibraltar connects the Atlantic Ocean to what sea?
102. What are the top 5 items typically found on beach clean-ups?
Food wrappers (1.7 million pieces), drink bottles (1.6 million), bottle caps (1.1 million), and grocery bags (757,523) round out the top five.
103. Plankton largely resides in what part of the ocean?
104. What is the primary food source for coral reefs?
105. Which of the following can help reduce ocean trash
Reduce Your Use of Single-Use Plastics.
Participate In (or Organize) a Beach or River Cleanup.
Avoid Products Containing Microbeads.
Spread the Word.
Support Organizations Addressing Plastic Pollution.
106. The entirety of Mount Everest—at 29,029 feet—could easily be accommodated in what part of Mariana Trench?
107. The total value of the unrecovered underwater treasures might be approximately
108. Which groups of fish are the seahorses closely related to?
109. When tropical fish are caught, fishermen use what chemicals to make them float out of the reef for easy scooping. causing to bleach coral reefs and kill scores of other fish?
110. Communications companies maintain international connections by feeding cables down to (hopefully) flat surfaces on the ocean floor. True/ False?
111. Fish in the northern Pacific, researchers at the University of California, San Diego once estimated they swallow between ___ tons every year.
12,000 and 24,000 tons
112. What is a fish a little smaller than your average human finger that has a mouth full of fangs and can glow in the dark?
113. What is the name of giant kelp, a type of seaweed that experiences an astonishing growth spurt to reach its usual height of 100 feet, and the species can grow up to two feet in a single day?
114. What is NOAA
The National Oceanic and Atmospheric Administration (NOAA)
115. What volcanic eruptions go unnoticed by land-dwellers as these are erupting underwater/
Up to 80 percent
116. What is the largest recorded Tsunami?
A 1958 earthquake and landslide in Alaska generated a tsunami 100 feet high and destroyed all vegetation up to 1720 feet, the largest in recorded history.
117. Where is the biggest waterfall on earth in the Atlantic?
118. Recent studies have shown plastic pollution in what percent of marine turtles?
119. Inside the Mariana Trench, there is a valley known as Challenger Deep that extends roughly ________miles below the surface.
Seven miles (36,070 feet)
120. How much of the oxygen that we breathe is produced by oceans?
121. What is the process called that salt is removed, leaving freshwater from the ocean water?
122. What is the name of phytoplankton which is estimated to be solely responsible for one in every five breaths a human takes?
123. What if the fish prevents ice crystals from growing, preventing their blood from being overcome by the chill and allowing it to continue flowing?
124. Why the water you drink out of a glass doesn’t appear ocean blue?
The seawater absorbs the longer red and orange wavelengths of light while reflecting blue light back. This is why the water you drink out of a glass doesn’t appear ocean-blue
125. How many adult humans could fit inside the space of the blue whale’s heart?
126. What is the most remote place on earth is in the south Pacific named
127. How much gold is estimated to exist in ocean water?
20 million tons
128. What is called the water walls found three miles below the surface of the ocean?
The internal waves
129. Researchers discovered that sound from earthquakes, passing baleen whales, and other ambient noise to almost the bottom of the Mariana Trench was audible by
130. What is emitting a bright blue glow in the ocean waters of Southern California?
131. What is the second-largest ocean?
132. What percent of all life is found in the ocean?
133. Water from under the seafloor seeps up and dissolves salt layers, forming depressions. Because the water in the depression is denser than the water all around it, it settles into the depression and forms what?
Underwater Lakes and Rivers
134. The blue color of the ocean is the result of what is being absorbed by the surface and its blue wavelengths penetrating deeper, giving way to a blue tint?
The sun’s red and orange wavelengths
135. At the bottom of the Mariana Trench, what is the pressure is?
About eight tons per square inch, the equivalent of about 100 fully-grown elephants.
136. How long is the longest cable?
SEA-ME-WE 3, the cable is a whopping 39,000km (24,000 miles) long.
137. What is the name of wires crisscross the ocean floors, put in place by boats built solely for telecommunication and internet purposes?
Submarine communications cables
138. What is the length of the submarine cables?
1.2 million kilometers, approximately 420 submarine cables in service
139. How deep are submarine cables laid?
The deepest part of the submarine cable between Japan and the U.S. is about 8,000 meters below sea level (in the Japan Trench)
140. Who owns undersea cables?
A consortium of owners often owns underwater cables, and it is this group that bears the expense of installing new underwater cables. In addition to the first transatlantic cable that was permanently successful, another cable that had been partially built in 1865 was also finished in 1866. The two businesses had strong ties to the American investor Cyrus W. Field and the British scientist Lord Kelvin.
141. The record for the deepest free dive is held by Whom, dove to an astounding depth of 86 m without any breathing equipment?
142. Many fish can change sex during the course of their lives. Others, especially rare deep-sea fish, have both male and female sex organs. True/ False?
143. More than what percent of the trade between countries is carried by ships and about half the communications between nations use underwater cables?
144. What is the normal lifespan of icebergs?
145. How many icebergs are produced by the Arctic annually?
146. Each year, three times as much rubbish is dumped into the world’s oceans as the weight of fish caught. True/ False?
147. What portion of the world’s oil comes from offshore fields in our oceans?
148. What is the ting, measuring 2,300 km in length and covering an area more extensive than Britain, is the largest living structure on Earth, and can be seen from space?
The Great Barrier Reef
149. What is responsible for 33% of the toxic contaminants that end up in oceans and coastal waters?
150. What percent of the toxic contaminants come from runoff via rivers and streams in the ocean?
151. The density of seawater becomes denser as it becomes colder, right down to its freezing point of -1.9°C, unlike fresh water which is most dense at 4°C, well above its freezing point of 0°C. True/ False?
152. 10,000 years ago what was the ocean level than it is now?
It was about 110 m lower
153. What is the percentage of the whopping all habitable space on the planet ocean comprises?
154. A ______ of seawater may contain millions of bacterial cells, hundreds of thousands of phytoplankton, and tens of thousands of zooplankton.
155. 898 species from more than 100 families and a dozen ____ in an area about half the size of a tennis court.
156. What is the fastest fish in the ocean reaching speeds up to 121 kph in quick bursts
Swordfish and marlin
157. The Denmark Strait, a massive underwater cascade of water that plummets
11,500 feet (more than three times the height of Angel Falls in Venezuela)
158. Because of the architecture and chemistry, what are the ocean elements similar to human bone and have been used to replace bone grafts in helping human bone to heal quickly and cleanly?
159. The sea level has risen at an average what rate and scientists expect this rate to increase?
10-25 cm increase over the past 100 years
160. Antarctica has as much ice as the Atlantic Ocean has water. True/ False?
161. What is a common fact between the Arabian Gulf, the North Sea, and the Gulf of Mexico?
Areas most popular for oil drilling
162. What mountain is half under the water and a half above it, and, from top to bottom, it stretches a whopping 33,500 feet?
Mauna Kea, that’s almost a whole mile taller than Mount Everest!
163. What is the greatest percentage of the world’s protein consumed by humans?
164. What is the longest bony fish in the world?
Oarfish (Regalecus glesne)
165. Refined oil is also responsible for polluting the ocean. True/ False?
166. What is the average temperature of all ocean water?
167. What is This unique spot” Point Nemo” 20,000 Leagues Under the Sea?
The “oceanic pole of inaccessibility” is the location that is the farthest from land on the entire globe. The three islands are Maher Island off the coast of Antarctica, Motu Nui far off the western coast of Chile, and Ducie Island, one of the Pitcairn Islands between South America and Australia. Only 250 miles are covered by the International Space Station’s orbit around the planet.
168. What is the significance of 3.1 billion to 3.4 billion years ago?
Life began in the ocean
169. If all the world’s ice melted, how much the oceans would rise?
170. What type of ecosystem do we live in?
171. How many species are we losing per hour?
172. It is more than 50,000 km in length, which wings around the globe from the Arctic Ocean to the Atlantic, skirting Africa, Asia, and Australia, and crossing the Pacific to the west coast of North America. What is this?
Mid-Ocean Ridge, Earth’s longest mountain range, more than 50,000 km in length
173. What are the 4 types of ecosystems?
The four ecosystem types are classifications known as artificial, terrestrial, lentic, and lotic.
174. If you could take Mt. Everest and place it at the bottom of the trench there would still be over a mile of the ocean above it. True/ False?
175. How many species of whale are there in the world?
176. “Currently, scientists have named and successfully classified around 1.5 million species. It is estimated that there are as little as 2 million to as many as 50 million more species that have not yet been found and/or have been incorrectly classified.” True/ False?
177. What moves 100 times as much water as all the rivers on earth and flows at a rate 300 times faster than the Amazon, which is the world’s largest river?
The Gulf Stream
178. It can travel between 40-121 km/day at 1.6-4.8 kph and extends some 1,006 m deep. What is this?
The Kuroshio Current, the largest current
179. What portion of the Earth’s surface is occupied by the Pacific Ocean?
180. What is the largest ecosystem in the world?
181. What country has the most ecosystems?
The South American nation is the most biodiverse country on earth by area, and second overall behind the much larger Brazil.
182. What do we commonly know about the Japanese word meaning “harbor wave”?
183. Less than 1% is freshwater, and 2-3% is contained in glaciers and ice caps, which is
184. How much depth of the ocean holds as much heat as the entire atmosphere?
The top ten feet
185. What percentage of the world’s animals live in the ocean?
Scientists now estimate that 80 percent of Earth’s species live on land, 15 percent in the ocean, and the remaining 5 percent in freshwater.
186. What percentage of all volcanic activity occurs in the oceans?
187. What are the two main types of whales?
Baleen whales and the toothed whales
188. What are biomes?
Ecosystems are parts of biomes, which are climatic systems of life and organisms. In the biome’s ecosystems, there are living and nonliving environmental factors known as biotic and abiotic.
189. At some times of the year, the difference between high and low tide is 16.3 m, taller than a three-story building. What is this place?
The highest tides in the world are at the Bay of Fundy
190. It is four times longer than the Andes, Rockies, and Himalayas combined. What is this?
The Mid-Ocean Ridge, an underwater mountain belt
191. What underwater area is as productive as the same area in rainforests, most crops, and intensive agriculture. ?
Ocean upwelling zone or deep estuary
192. What is the largest current?
The Kuroshio Current, off the shores of Japan
193. What is a well-known current of warm water in the Atlantic Ocean?
The Gulf Stream
194. What is the world’s largest water body?
The Pacific Ocean
195. What is the greatest depth, 8,381 m, in the Atlantic Ocean?
Puerto Rico Trench.
196. What is the depth of the lowest known point on Earth, called the Challenger Deep?
197. What is the speed of sound in water – nearly five times faster than the speed of sound in air?
198. What is the pressure at the deepest point in the ocean?
More than 11,318 tons/sq m, or the equivalent of one person trying to support 50 jumbo jets.
199. An estimated what percent of all life on earth is found under the ocean surface?
200. How much area does the Pacific cover?
179.7 million sq km.
201. Where was the largest recorded tsunami measured 60 m above sea level caused by an 8.9 magnitude earthquake in 1899 traveling at hundreds of km/hr?
in the Gulf of Alaska
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