14.1
The percentage of Earth's surface covered by ocean
71%
The three main regions of the ocean floor.
1. Continental Margin
2. Ocean Floor Basin
3. Mid-Ocean Ridge
The three types of seafloor sediments.
1. Terrigenous
2. Biogenous
3. Hydrogenous
The two major energy sources obtained from the ocean floor.
Oil and Natural Gas
This is a major environmental concern that occurs with offshore drilling which can pollute water.
Oil Spills
The ocean which is the largest and deepest.
Pacific Ocean
Very flat features that form when turbidity currents deposit sediments on the ocean floor.
Abyssal Plains
The type of sediment which consists of mineral grains eroded from continental rocks.
Terrigenous Sediment
When bacteria break down organic matter in seafloor sediments, this compact chemical structure can form.
Gas Hydrate
These sites are formed along mid-ocean ridges and are characterized by mineral-rich and very hot water surrounding chimney-like structures.
Hydrothermal vents
The measurement of ocean depth and the mapping of the topography of the ocean floor.
Bathymetry
The zone of transition between the continent and the ocean basin floor.
Continental Margin
The materials from which biogenous sediment is made up of.
Once-living organisms
The offshore resource which is second to petroleum in economic value.
Sand and Gravel
The deepest known region of the ocean floor.
Challenger Deep- in the Mariana Trench
A small underwater craft used for deep-sea research
Submersible
The ocean floor feature that forms at sites where one plate descends beneath another.
Deep Sea Trenches
Hydrogenous sediment is formed in this way.
Minerals crystallize directly from ocean waters.
The economic importance of gas hydrates
Can be used as a fuel source
This type of sediment can travel thousands of miles through rivers before settling onto the ocean floor.
Terrigenous sediments
The name of the ship which took a 3.5 year voyage to make the first study of the global ocean ever attempted by one group.
HMS Challenger
The continental margins of the Pacific Ocean are narrower or wider ?than those in the Atlantic, and are not covered with thick layers of sediment.
Narrower
When metals precipitate around grains of sand, this type of nodule can form.
Manganese Nodules
Which of the following does NOT contain major deposits of energy resources?
A. Persian Gulf
B. Hudson Bay
C. Gulf of Mexico
d. North Sea
B. Hudson Bay
The site where new ocean floor forms.
Mid-Ocean Ridges