global ocean
DESCRIPTION
GLOBAL Ocean. 72% of Earth’s surface. Arthur C. Clarke. “How inappropriate to call this planet Earth, when clearly it is Ocean.”. 97% of all the water on Earth. Pacific Ocean. Largest, deepest oldest ocean Cover 1/3 rd of Earth’s surface Average depth- 4.3 km - PowerPoint PPT PresentationTRANSCRIPT
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GLOBAL Ocean
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72% of Earth’s surface
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Arthur C. Clarke
•“How inappropriate to call this planet Earth, when clearly it is Ocean.”
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97% of all the water on Earth
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Pacific Ocean
• Largest, deepest oldest ocean• Cover 1/3rd of Earth’s surface• Average depth- 4.3 km• Natural resources: oil, gas, metal nodules,
sand, gravel , fish• Over 25 000 islands
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Pacific Ocean
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Pacific Ocean
• Deepest sea floor in the world
• 10 911 meters• Deep sea trench for by
the plate tectonic movement called SUBDUCTION
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Atlantic Ocean
• 2nd largest, youngest ocean
• Contains oil, gas, placer deposits, sand , gravel, precious stones, metal nodules, placer deposits, fish marine mammals
• Icebergs a natural hazard• Piracy occurs
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Atlantic Ocean
• Puerto Rico trench is the deepest part, 8 650 meters deep• Many rivers flow into
the A.O.• Few islands
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Atlantic Ocean
Also known for:• Broadest continental shelf• summer and fall hurricanes• The Bermuda Triangle• The Mid- Atlantic Ridge• The shipwreck of the Titanic
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Indian Ocean
• 3rd largest , warmest, saltiest ocean• Natural resources include oil, gas, fish ,shrimp,
sand, gravel, placer deposits, metal nodules• High risk of piracy• Known for strong, shifting monsoonal flow of
wind and water
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Indian Ocean
• Deepest part is the JAVA Trench, 7 258 m deep
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Southern Ocean
• Runs from the coast of Antarctica to 60⁰S
• Very deep, between 4000 – 5000 m
• Large and possible giant oil and gas fields, Mn nodules, sand, gravel, squid, whales, seals, krill
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Southern Ocean
• South Sandwich Trench is the deepest part, 7235 meters
• Huge icebergs
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Arctic Ocean
• Smallest ocean• Natural resources
include sand, gravel, placer deposits, oil , gas, placer deposits, metal nodules, fish, marine mammals
• Fragile ecosystem• Thinning ice
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Arctic Ocean
• mostly ice covered• Mainly surrounded by land• Shallowest ocean• Many icebergs
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SEAS
• A large body of salt water, smaller than an ocean that may be partly or nearly surrounded by land
• Examples: Sargasso Sea Caribbean Sea
Mediterranean Sea• Pencil in # in green
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GULFS
• An area of water bordering on and lying within a curved coastline, usually smaller than a SEA but larger than a BAY
• Examples : Gulf of Mexico Gulf of Alaska Persian Gulf• Pencil in # in orange
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BAYS
• An INLET of the OCEAN or part of the OCEAN bordering on land and partly surrounded by land
• Examples : Chesapeake Bay Bay of Bengal Hudson Bay• Pencil in # in red/pink
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STRAITS
• A passageway of water connecting two large bodies of water
• Examples: English Channel Davis Strait Korea Strait• Pencil in # in purple