Is mayonnaise an instrument?
What is earth’s nickname?
The Blue Planet
Name the two things that each provide half our atmosphere’s oxygen.
Plants & tiny ocean organisms
What percent of the ocean bottom has been explored?
5%
On nautical charts, what is the limit of the high tides called?
The shoreline
What is the region immediately behind the shoreline called?
The coast
What have scientists used to determine where to penetrate the sea floor with drill holes tens of thousands of feet deep?
satellites
What percentage of volcanic activity takes place in the oceans?
What was the main emphasis of oceanography in the mid-90s?
Exploration
How much of the American population live within fifty miles of the coast of an ocean?
3/4
Where do icebergs originate?
The 2 polar regions of the world
What percent of the earth’s water is freshwater?
2.5%
What do oceans help regulate?
Along with the atmosphere, the oceans help to, regulate the climate and weather of the world.
How much of the water on the surface of the earth is seawater?
97%
What is the extent of the world’s shoreline?
275,000 miles
There has been more exploration of the ocean bottom since ____________________ than in all the rest of recorded history. (Name the year)
1950
What ship set out for England to conduct the first expedition devoted to oceanographic research? When did it set off? How long was the expedition to last?
HMS Challenger, December of 1872, three and, half year
Fill in the blanks: The ____________________ ____________________ is what joins the continental shelves to the deep-ocean floor.
continental slope
Name diverse fields studied as part of oceanography, or marine science.
zoology, physics, meteorology
In 2012 the deepest drilling to date was conducted by R/V Chikyu, a vessel of the International Ocean Drilling Program. The borehole went to an amazing depth of ____________________ feet.
25,945 ft
52, 459 ft
25,934 ft
25,394 ft
How many cubic miles of ocean covers the earth?
330 million
In geology, what is subduction?
the theoretical process whereby one oceanic plate, slides under another crustal plate
Name at least four things that influence the shaping of the shorelines of the world.
Any four: wave action; currents; tides; the action, of oysters, mussels, other sea creatures, and, various types of vegetation
What percent of the mass of an iceberg lies below the water line?
90%
Why can’t people drink seawater?Explain
The kidneys need three liters of water for every, liter of salt consumed. Due to the high salt, content, drinking seawater speeds up the rate of, dehydration and leads to a slow and painful death.
Name the five distinct oceans that scientists recognize.
Pacific Ocean, Atlantic Ocean, Indian Ocean,, Southern Ocean, and Arctic Ocean