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56 Cards in this Set

  • Front
  • Back
Diatoms shells are made of what?
Does evaporation add or subtract to ocean salinity? Precipitation?
Add; subtracts
What are crustaceans? Give one example.
Planktonic animals with jointed legs and exoskeleton
Close to the deep-sea floor , the temperature of the ocean ranges between __?
34 and 39 degrees Farenheit
What is the photic zone?
Sunlit surface waters that extend 330 ft where marine plants live
Oceans are divided into smaller bodies of water called ____?
Seas, gulfs, bays
How much oil is estimated to lie undiscovered beneath the ocean?
63-530 billion barrels
What do oceanographers study? the ocean moves it affects the atmosphere organisms live in the sea various forces shape the sea floor
How many species of fish does the ocean house?
The ocean contains what percent of all the water on earth?
What is the continental shelf?
Submerged land at the edge of the continents
From shoreline its slopes to 430 ft, 47 mi wide
What are the major resources the ocean provides?
Food, energy, minerals, medicines
Name the major wind-driven currents.
North and South Equatorial, California, Canary, Gulf, Stream, Kuroshio (Japan Current), Labrador, Peru, Antarctic Circumpolar (West Wind Drift)
What is the average depth of the Indian Ocean?
12, 600 ft
Name two phytoplankton.
Diatoms, dinoflagellates
The ___ has the warmest surface water.
What minerals recovered from the ocean are used to make construction materials?
Sand gravel
What is the range of ocean surface temperatures? Where?
28 degrees(poles) - 86 degrees(equator) Farenheit
Why are some sands valuable?
They are rich in phosphorite.
How much is worldwide commercial fish catch from the ocean?
200 billion pounds
Crustaceans make what percent of planktonic animals?
What are the deepest areas that are long narrow valleys on the sea floor?
What is the continental rise?
Accumulated sediment from shelf and slope
Extend 600 mi from slope
What are the waters surrounding Antarctica called?
Antarctic Ocean, Southern Ocean
What are the nekton?
Free swimmers that live deep in the ocean
What is the world ocean? Name another name for it.
All the waters of the ocean; global ocean
What are some nektonic mammals?
Dugongs, manatees, porpoises (always in water)
Sea lions, sea otters, seals, walruses (land also)
What is the average depth of the world ocean?
12,200 feet
What is the continental margin?
Part of the seabed that borders the continents: shelf, slope, rise
People eat ___% of fish caught directly. The rest is used in ____.
60; fish oil, fish meal, livestock feed, pet food
Discuss the Antarctic Circumpolar Current.
Also known as West Wind Drift
Strongest, only one that circles earth
The Pacific Ocean stretches from where to where? How far?
Panama to Malay Peninsula; 15,000 miles
Deposits near undersea hot springs contain what elements?
Copper, iron, zinc
How tall is Mount Everest?
29,035 feet
What is kelp? Why is it valued?
Large, brown variety of seaweed; source of algin
What is the Arctic Ocean and its other name?
North of Asia, Europe, North America, considered part of the Atlantic; Artic Sea
What are nodules? What other elements do they contain?
Manganese deposits that lie on the ocean bottom in lumps
Cobalt, copper, nickel

Besides the ocean, where is the water on earth?
Glaciers and icecaps, lakes and rivers, underground, air
How are waves created?
Winds, earthquakes, gravitational pull of the moon and sun
What is surimi?
Fish product developed in Japan and made into imitation crab
What are the three groups of ocean life?
Plankton, nekton, benthos
Hake is used for what?
Protein powder
Discuss the goby.
Smallest fish (Trimmatom nanus), lives in the Indian Ocean grows up to 2/5 inch
Name the oceans in order of size.
Pacific, Atlantic, Indian
How does water move in an ocean wave?
Up and down, no forward motion except when it reaches land
According to Arnold Gordon, the market for what is growing?
What size are hurricane waves?
100 ft
What is krill?
Shrimplike animal with high protein
What is algin?
Thickening substance used in ice cream, salad dressing, cosmetics
What are whitecaps?
Where the wave breaks
How far can the shelf extend in the Arctic region? Pacific?
1000 miles; 1 mile
What is the continental slope?
Edge of shelf sloping much steeper to 2.25 mi, from 12-60 mi wide
Contains the canyons
Discuss tsunamis.
Aka tidal waves, caused by movements of the ocean floor (earthquakes)
Can travel 600 mph, water level reaches 3 ft until 10-30 min when waters pile up
Occur on Pacific Ocean
What are names for fish farming? Since when has it been used?
Mariculture, aquaculture
Used for thousands of years in Asia, 1960s in Western countries
What is a spring tide?
Sun, moon, earth in straight line; during full and new moon; tides higher and lower than usual
Discuss tides.
Rhythmic rise and fall of oceans, six hours between high and low tide due to attraction of moon of earth