Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
The Restless Oceans
Prentice Hall Physical Science: Section 23.5
| Question | Answer |
|---|---|
| What is salinity? | the proportion of dissolved salts in water |
| Describe ocean salinity | Averages about 35grams of dissolved salts for each kilogram of water |
| Explain the meaning of continental shelf | gently sloping plain that forms an apron of shallow water along the edges of most continents |
| What is a surface current? | continuously flowing water on top of the ocean that is created due to winds blowing over the area directly above the ocean |
| Explain density current | Ocean currents that are caused by differences in the ocean due to temperatures and/or salinity levels. These kinds of currents are responsible for slow mixing of the water between the surface and deeper ocean. |
| Describe what happens in an upwelling | movement of cooler water from the deep ocean to the surface; occurs when winds push warmer surface water aside allowing cooler water to flow up. |
| Explain how hydraulic action changes the landscape | Waves fill cracks with water and before the water can exit the crack more waves force more water in the crack. More pressure increases the erosional effect and breaks down the rock. |
| What is longshore drift? | the process where short waves and currents move sand futher down the beach. It usually produces a zigzag pattern in the sand. |
Created by:
Mathisdjax
Popular Earth Science sets