Compare warm and cold ocean water.
Rises to the surface
Very salty
Less salty
Sinks to the bottom
Warm Ocean Water
Cold Ocean Water
Where would you expect to find a garbage patch in the North Pacific Ocean?

Which layer of the ocean has the highest salinity?

Deep ocean circulation is powered by differences in density, temperature, and salinity. We call this the Great Ocean Conveyor Belt.
In the North Atlantic Ocean near Greenland, ice forms. The salty, cold water sinks and warm water replaces it.
But in recent years less ice has been forming in the North Atlantic. How will that affect the Great Ocean Conveyor Belt near Greenland?
The water will become salty and sink more .
A teacher did a demonstration with one cup of fresh water dyed yellow and one cup of salty water dyed blue.
Using a piece of cardboard between them, she arranged the yellow fresh water cup over the blue salt water cup.
What will happen when she removes the cardboard between them?
Which explanation best supports your answer to the previous question?
What is the most common marine debris found in the ocean?
What are the harmful effects of marine debris on living things? Give 1 example.
El Niño is characterized by cold ocean surface temperatures and La Niña is characterized by warm ocean surface conditions in the Pacific Ocean.
Categorize these images as El Niño, normal, or La Niña conditions.
El Niño
Normal
La Niña
When does the upwelling near South America slow down, affecting Peruvian fishermen?
The Pacific Northwest experiences conditions during El Niño and conditions during La Niña.
The effects of El Niño and La Niña have since 1950.
Which type of symbiosis is the relationship between a coral polyp and its algae (zooxanthellae)?
Explain why you chose your answer to the previous question. How does the relationship between the coral polyp and algae represent that type of symbiosis?
What will cause coral to expel their algae symbionts?
The pH of the ocean is slightly but since 1850 has become more
How does ocean acidification affect sea creatures that have shells?
What drives the ocean's surface currents?
Which TWO factors drive thermohaline circulation (deep ocean currents)?
What do organisms like clams, oysters, and corals use to build their shells and skeletons?
Which molecule is responsible for changing the pH of the ocean?