Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
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

chp 18 oceanography

QuestionAnswer
How do humans depend on the oceans? Food Natural resources Transportation
Origin of the Oceans About 4 bya, water vapor began to be stored in Earth’s early atmosphere. As the ozone layer built up, the atmosphere cooled and the water vapor condensed. Rains fell and filled basins, low areas on the Earth.
Composition of the Oceans Dissolved gases and solids from the atmosphere and land At a “steady state”: composition doesn’t change
Salinity A measure of the amount of salts dissolved in ocean water. Most common salts are sodium and chloride Approx. 3.5% of ocean water is salts.
Desalination A process that removes salts from ocean water. Water is evaporated repeatedly, leaving salt behind. May make ocean water drinkable.
Surface Currents Move water horizontally, parallel to Earth’s surface Powered by the wind, affected by the Coriolis effect Move only upper 200-300 meters of water Example: Gulf Stream
Upwelling A vertical circulation in the ocean that brings deep, cold, nutrient-rich water to the ocean surface. Creates important fishing industries
Density Current Forms when a mass of ocean water becomes more dense than the surrounding water, causing the more dense ocean water to sink. Happens due to increased salinity or decreased temperature Example: North Atlantic Deep Water Forms around Norway, Greenland, a
Created by: deelavette
Popular Earth Science sets

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards