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8.1

oceans

QuestionAnswer
What is the measure of the mass of dissolved solids in a mass of water? Salinity
What is water from a sea or ocean that has an average salinity of 35 ppt called? Seawater
Freshwater mixed with seawater is called what? Brackish
Large, flat areas of the seafloor that extend across the deepest parts of the ocean basins. Abyssal plains
Chemical process in which light energy, water, and carbon dioxide are converted into sugar. Photosynthesis
The continental margins include the continental rise, and shelf. Slope
What filled the oceans tens of thousands of years ago? Precipitation
Where tectonic plates collide what is created on the seafloor? Trenches
In areas where the ocean floor SEPARATES what is created? Mid-ocean ridges
What do oceanographers use to explore the seafloor? Submersibles
Which zone receives no sunlight? Deep zone
Which zone receives some sunlight? Middle zone
Which zone receives most sunlight? Surface zone
What is one of the two main types of resources on the seafloor. Energy
True or False? The five oceans are the Atlantic, Pacific, Antarctic, Indian, and Southern. True
True or False? Salinity is a measure of the mass of dissolved solids in a mass of water. True
True or False? A salinity of 35 parts per thousand means that if you measured 1,000 g of seawater, 1,000 g would be water molecules and 35 g would be salts. False
True or False? The salinity of seawater is not constant. True
True or False? Brackish water is polluted water mixed with seawater. False
What happens to density as depth increases in oceans? Increases
The continental shelf, slope, and rise are regions of the continental what? Plains
Besides energy what is the other main resource found on the seafloor? Mineral
Physical characteristics used to classify the ocean into zones include water depth, temperature, salinity, density, and the amount of what received? Sunlight
List two main categories of resources on or beneath the ocean floor. Energy and minerals
Why do organisms that perform photosynthesis live only in the surface zone? They receive the sunlight needed.
Created by: trackjor2176
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