Section 13 A
How many ocean basins are there on the Earth?
Does percentage of salinity in seawater affect the freezing point of the seawater? Will a higher amount of salinity in an ocean lead to a cooler or warmer freezing point than normal?
Yes, it does affect the freezing point of ocean water. If seawater has a higher percentage of salinity, then the freezing point of the seawater will be colder than normal.
According to the textbook, how many main zones is the ocean generally divided into?
What is a strip of land that separates the coastal region from the ocean?
The shore
What is a specific word that starts with an "m" that when used as an adjective always refers to anything having to do with the oceans?
In reality, how many oceans are there on the Earth
One
What are the names of the two most abundant minerals in sea water?
Sodium ions and chloride ions
What ocean zone is is the closest to land and is consistently exposed to air and water every day?
The intertidal zone
The submerged edges of continental plates.
Continental Shelf
What the term "salinity" refers to
How much salt is in a sample of sea water
What is the official name for a ring of low coral islands and reefs surrounding a central lagoon?
An atoll
What is one natural process that increases the salinity of seawater?
1.) Rivers
2.) Soil carried by the wind
3.) Volcanic Ash carried by the wind
4.) Hydrothermal water from the earth's interior
5.) Water freezing
What is the only source of light in the Aphotic Zone?
Bioluminescent animals
What is the relatively flat, deep sea floor?
The abyssal plain
The two units of measurement that are used when calculating ocean pressure at a specific depth
PSI and Atmospheres
Explain the two theories that old Earth geologists believe may explain the origin of the oceans.
1.) The Earth retained water as it formed from a nebular cloud
2.) Icy bodies in space deposited water on Earth during frequent collisions shortly the Earth formed.
What is one process that decreases salinity in the ocean?
1.) Ocean ice melting
2.) Living things using minerals in the water to create things such as seashells, corals, etc.
3.) Mineral ions clumping together, becoming sediments, and then settling to the sea bottom
4.) Chemicals can sometimes become so concentrated that they precipitate and form sediments
What is one way that atmospheric nitrogen can be converted into organic nitrogen (nitrogen that can help the life processes of marine animals)?
1.) Lightning
2.) Certain bacteria
What is the name of a submerged volcano? What is the name of a submerged volcano that has a flat top?
A seamount and a guyot
What is the the ability of certain animals to map out distances of objects in their environment using sound waves?
Echolocation
Name all the ocean basins on the Earth
Around 4.5 times
Starting with the Photic Zone, name in order all four ocean zones from the chapter closest to the surface to farthest from the surface of the ocean (the four zones are hadal, photic, abyssal, and aphotic)
A topographic feature in the ocean that is formed from the action of several tectonic plates at a convergent subduction zone?
An oceanic trench
What the word "potable" means
Suitable for drinking