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PoW/CoO/OC

properties of water/ composition of oceans/ ocean currents

QuestionAnswer
What is Polarity? a condition in which opposite ends of a molecule have slightly opposite charges, but the overall charge of the molecule is neutral
NaCI (salt) does what when added to H2O? dissolves or breaks apart
In H2O what is the charge of the hydrogens? positive
In H2O what is the charge of the oxygen? negative
What is cohesion? the attraction among molecules that are alike
What is adhesion? the attraction between molecules that are not alike
Why is water sometimes called the universal solvent? water is sometimes called the universal solvent because so many substances dissolve in it. Because water is a polar molecule, ionic compounds can easily dissolve in it.
Why do water molecules attract each other? water molecules attract each other because of polarity
How did the water on Earth become salty? As rain washed over rocks, it dissolved minerals that form salts. Rivers and streams carried these substances to the ocean basins and made the water salty.
What is salinity? the measure of the mass of dissolved solids in a mass of water
What are the three regions of Continental margins? continental shelf, continental slope, continental rise
What are the four criteria scientists use when classifying ocean zones? Amount of sunlight, temperature, salinity, density
What is the surface zone of the ocean? Area of shallow water that receives the greatest amount of sunlight: most organisms that live there preform photosynthesis
What are the deepest parts of the ocean and what is the deepest one called? Ocean trenches and The Challenger Deep
What are mid-ocean ridges? continuous mountain range that extends through all of Earth's oceans
What are the two types of resources found on or underneath the ocean floor? Energy resources and minerals
What causes surface currents? wind
What are ocean currents caused by? winds and the amount of salt in the water
What is the most powerful ocean current? the Gulf Stream
What causes deep currents? density and gravity
How many major gyres are there? five
What is an ocean current? a river of water running through the ocean
What kind of ocean currents are warm and salty? Thermohaline currents
Where is the Labrador current located? near Greenland
Created by: c_dinan
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