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PoW/CoO/OC
properties of water/ composition of oceans/ ocean currents
| Question | Answer |
|---|---|
| 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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