Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
27 Cards in this Set
- Front
- Back
|
Of what do the oozes on the seafloor mostly consist? |
Silicon and Calcium Carbonate |
|
|
What underlines the unconsolidated sediments of the seafloor? |
Basalt Pillows and Basement Rocks |
|
|
What Transports Large Volumes of bottom sediments long distance? |
Turbidity Currents- an underwater current flowing swiftly downslope owing to the weight of sediment it carries |
|
|
Why are carbonate sediments rare in deep sea sediments? |
The carbonate shells dissolve in deep water |
|
|
What Type of Sediment Mostly Covers the floor of the North Pacific Ocean? |
Red and Brown Clays |
|
|
What Types of Sediments are Oozes? |
Biogenous Sediments- made up of life |
|
|
What types of sediments are the sediment that cover the greatest area of seabed? |
Biogenous Sediments- made up of life |
|
|
What is the most abundant type of sediment in the Ocean? |
Terrigenous Sediment- derrived from land |
|
|
Which sediments are generated in place on the spot we find them? |
Hydrogenous Sediments- precipitation of dissolved material in saltwater, made up of water |
|
|
Which sediments arrive in the ocean from continents VIA Rivers |
Terrigenous Sediments |
|
|
Which sediments are of extraterrestrial origin? |
Cosmogenous Sediments |
|
|
Which sediments can be used to learn about seabed age and history? |
EVERY SEDIMENT |
|
|
Which sediments are sometimes made of glass? |
Hydrogenous Sediments |
|
|
Where is the largest volume and quantity of marine sediments found? |
Continental Slopes and Rises |
|
|
What is lithification? |
Th process where sediments are converted into solid rock by pressure |
|
|
What is the order of these from finest to coarsest? sand, silt, clay and grannules |
Clay, silt, sand, granules |
|
|
Describe the hydrogen bond between two water molecules |
positive end of one water molecule bonds to the negative end of another water molecule
|
|
|
What is the average salinity of the world ocean? |
35%, usually ranges from 33% to 38% |
|
|
What are the two most abundant elements (ions) dissolved in seawater besides hydrogen and oxygen? |
Chloride and sodium |
|
|
Does seawater hold more gas in solution when it is cold or warm? |
Cold |
|
|
Where does most of the oxygen in seawater come from? |
Because of the photosynthesis performed by the marine plants- that is why there is more oxygen at the surface and more CO2 at the bottom |
|
|
Where does most of the CO2 come from in the seawater? |
The respiration of marine animals |
|
|
What does the term "residence time" mean for elements in the ocean? |
Rate at which elements are added or removed from the ocean (average time an atom of an element spends in the ocean) |
|
|
What property makes the ocean slow to heat or cool? |
Heat Capacity or Specific Heat |
|
|
How does salinity affect the density of water? |
Higher the salinity, higher the density |
|
|
How does Temperature affect the density of water? |
Cooler the water, the more dense it is |
|
|
Temperature vs. Heat |
hi
|
