notes

The world ocean, which reaches an average depth of 4,000 meters, it is accountable for 70% of the Earth’s total surface. The world ocean is composed of 5 major oceans, which are the Pacific Ocean, Atlantic Ocean, Artic Ocean, Southern Ocean, and Indian Ocean. Oceanic ridges and their associated structures make up 22.1% of the earth’s solid surface and ocean basin floors make up 29.8%. An oceanic ridge is a mountainous chain of young basaltic rock at the active spreading center of an ocean. The mid-Atlantic ridge does not run in a straight line since it is offset at more or less regular intervals by transform faults. Transform faults are the active parts of fracture zones, which extend outward from the ridge axis. Some of the most exiting parts of the ocean basins include the hydrothermal vents. The world ocean also includes abyssal plains, which are flat expanses of sediment covered ocean floor found on the periphery of all oceans. It also includes guyots, which are flat-topped seamounts that used to be tall enough to approach or penetrate the sea surface. Another part of the ocean is an arc-shaped depression in the deep ocean floor known as a trench. The Pacific Ocean is the largest of the world’s five oceans and its important access waterways include the La Perouse, Tsugaru, Tsushima, Taiwan, Singapore, and Torres Straits. The Pacific Ocean is located between the southern ocean, Asia, Australia, and the western hemisphere. Some natural resources that could be found here include oil and gas fields, polymetallic nodules, sand and gravel aggregates, placer deposits and fish. Its endangered marine species include the dugong, sea lion, sea otter, seals, turtles, and whales. Some of the ports near the Pacific Ocean are in Thailand, Taiwan, U.S., Philippines, South Korea, China, Australia, Russia, NZ, and Japan. I believe that most of us can somewhat relate to the world ocean since we are practically surrounded by it. I really enjoy going to the beach and