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II. Ocean Statistics. Chapter 3 & 4 Notes. 1. There are 5 oceans, the Pacific, Atlantic, Indian, Arctic and Antarctic/Southern. The Pacific is the largest, the Atlantic is the longest, the smallest is the Antarctic , the Indian is extensively mined, and the Arctic is the coldest.
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II. Ocean Statistics Chapter 3 & 4 Notes
1. There are 5 oceans, the Pacific, Atlantic, Indian, Arctic and Antarctic/Southern . • The Pacific is the largest, the Atlantic is the longest, the smallest is the Antarctic, the Indian is extensively mined, and the Arctic is the coldest.
3. They hold 97% of Earth’s entire water supply. Yes, that means 3% is left for 7+ billion people to share, use, conserve and protect!!!
4. 85 different elements, of the 95 naturally occurring, have been identified within the oceans. The only two worth mining for a profit are Mn (manganese nodules) and NaCl (salt).
If mined, all the gold suspended in the world's seawater would give each person on Earth 9 pounds. If the ocean's total salt content were dried, it would cover the continents to a depth of 5 feet.
5. Of the ocean water, 96% is pure H2O, while 3.5% is salts. Sea salt generally refers to unrefined salt derived from an ocean or sea. It’s harvested by channeling ocean water into huge clay trays and allowing the sun and wind to evaporate it naturally. Manufacturers of sea salt usually do not refine sea salt much. So it still contains small amounts of other minerals, including iron, magnesium, calcium, potassium, manganese, zinc and iodine. Some of the most common sources for sea salt are the Mediterranean Sea, the North Sea, and the Atlantic Ocean Sea salt is thought to be healthier and more flavorful that traditional table salt.
6. Oceans developed about 4 billion years ago, as water vapor in Earth’s early atmosphere condensed.
How did it happen? No one was here to witness it!
7. Oceans originally collected in basins. By definition, an ocean is a large expanse of salt water, with many dissolved gases and solids.
8. Ocean surface temperatures vary from 1’C (35’F) at the poles to 24’C (70’F) at the equator.
9. Greatest known depth is 11,034 m (7 mi.) deep at the Marianas Trench (Challenger Deep). Although Mount Everest, at 29,028 feet, is often called the tallest mountain on Earth, Mauna Kea, an inactive volcano on the island of Hawaii, is actually taller. Only 13,796 feet of Mauna Kea stands above sea level, yet it is 33,465 feet tall if measured from the ocean floor to its summit.
10. Actually, the oceans are all 1 continuous body of water. These slides illustrate this concept!!!
Canada has the longest coastline of any country, at 56,453 miles or around 15 percent of the world's 372,384 miles of coastlines. Ninety percent of all volcanic activity occurs in the oceans. In 1993, scientists located the largest known concentration of active volcanoes on the sea floor in the South Pacific. This area, the size of New York state, hosts 1,133 volcanic cones and sea mounts. Two or three could erupt at any moment. At the deepest point in the ocean the pressure is more than 8 tons per square inch, or the equivalent of one person trying to support 50 jumbo jets.
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