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ocean currents test
currents/properties of water/compostition of ocean
| Question | Answer |
|---|---|
| Define the 3 properties of water | solid,liquid,gas |
| water makes up___ percent of the earth | 70 percent |
| what is something that only water can do? | water is the only substance that can be found as a solid,liquid,and gas |
| water molecules are what? | adhesive |
| water is called the universal solvent why? | it can dissolve most substances |
| water is the only substance that can naturally occur as what? | a solid,liquid,and gas |
| what are two of waters unique properties? | cohesion, and adhesion |
| water has a high level of what? | surface tension |
| define brackish water | brackish water is freshwater mixed with seawater |
| what is the salinity of brackish water? | often between o.5 and 17ppt |
| when water evaporates from the surface of the ocean what is left behind? | salt |
| what 2 elements make up table salt? | sodium and chloride |
| what ocean/sea has the highest salinity? | the dead sea |
| sea water salinity is expressed as a ratio of __to__ | salt(in grams) to liter of water |
| why is the salinity of oceans near the equator less than other oceans? | near the equator the tropics receive the most rain in a constant basis this helps decrease the salinity. |
| fresh water in the form of what moves from the ocean to the atmosphere through evaporation? | water vapor |
| define ocean currents | a horizontal flow of water through the ocean |
| name the 3 types of changing ocean currents | rip,longshore currents, and upwelling currents |
| define longshore currents | longshore currents are waves that approach the shore at an angle. |
| define upwelling currents | upwelling currents occur when wind displaces surface water and deeper water replaces it. |
| define rip currents | rip currents are relatively strong narrow currents flowing outward from the beach through the surf zone. |
| about 10 years ago nationial geographics did an exprement called the rubber ducky and figured out that it takes___ years for an ocean current to form. | 10 years |
| ocean currents are caused by__,__,and__ | wind gravity and density |
| what ocean current runs through the area where the titanic sank at? | the ladrdore current |
Created by:
kel523
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