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chapter 8 lesson 1


the continental shelf, continental slope, and continental rise are regions of what? continental plains.
why do organisms that perform photosynthesis live only in the surface zone? the surface zone receives the most sun light
what happens to density as depth increases in oceans? It increases
what is the term for an unscrewed submersible used to explore the seafloor? submarine
what are the two main types of resources on the seafloor? minerals and energy
what is the measure of the mass of the dissolved solids in a mass of water? salinity
what is it called when freshwater is mixed with saltwater? brackish water
large, flat areas of the seafloor that extends across the deepest parts of the ocean floor are the? abyssal plains
where tectonic plates collide the seafloor forms what? trenches
where tectonic plates separate the seafloor forms what? ridges
what is the water from a sea or an ocean that has an average salinity of 35 ppt called? seawater
brackish water is polluted water mixed with seawater. false
the salinity of seawater in is not constant. true
salinity is a measure of the mass of dissolved solids in a mass of water. true
what is the approximate temperature if water below a depth if 1,000 m? 4 degrees Celsius
at what depths is the salinity of ocean water relatively constant? 2,000
how where the oceans filled? tens of thousands of years of precipitation and possibly ice from comets and asteroids
what do Oceanographers use to explore the seafloor? submersible
what zone receives no sunlight? deep zone
which zone receives a little sunlight? middle zone
which zone receives the most sunlight? surface zone
as depth increases temperature does what? decrease
chemical process in which light energy, water, and carbon dioxide are converted to sugar. photosynthesis
to operate by hands or by mechanical means in a skillful manner. manipulate
depth, temperature, salinity, density, and the amount of sunlight received is to classify what? the ocean zones
Created by: johnsfai2159