P1B Oceanic Conveyor Belt

How does the ocean conveyor act as a carbon sink?

• Water is black below 100 m and this is like carbon

• Oxygen is taken to the bottom of the ocean

• Carbon dioxide is taken from the surface waters down to the bottom

• Fish breathe in carbon dioxide and keep it in their bodies

What is another name for the Oceanic Conveyor Belt?

• Thermohaline Circulation
• Thermospheric Circulation
• Oceanic Escalator
• Deepsea Currents

Why does the North Atlantic Drift current become dense enough to sink to the bottom near Norway?

• Cold winds (Westerlies) from Canada cools it down.

• Wind evaporates water and raises the salinity

• cools down as it is no longer heated by the Sun in the Tropics

• All of the other answers

Why has the water around Antarctica a high salinity?

• When sea ice forms it dumps salt below the ice into the ocean
• When sea ice forms it evaporates surface water and adds salt to the sea
• Blame it on the penguins
• The cold temperature condenses salt from the air.

One positive effect of the oceanic conveyor belt on ocean ecosystems.

• It takes oxygen down to the bottom of the ocean.
• It brings nutrients to the surface waters
• It mixes water from cold and warm places and prevents extreme conditions
• All of the above

The time that it takes for a molecule of water to circulate all the way through the oceanic conveyor belt

• 100 years
• 1000 years
• 10 000 years
• 100 000 years

One way how the oceanic conveyor belt can slow down global warming.

• It takes warm water to the bottom of the sea
• It takes cold water to the bottom of the sea
• It takes CO₂ to the sea floor
• All of the above

Where does the oceanic conveyor belt rise to the surface?

• In the North Atlantic Ocean
• In the North Pacific and Indian Oceans
• Along the coast of Antarctica
• It never rises to the surface

Why is the Oceanic Conveyor Belt also called the Thermohaline Circulation?

• Because it was discovered by Thermo Haline.
• Because it is driven by temperature and salt differences 
• Because it flows at the surface and bottom of the ocean.
• Because of the quant mauve colour of the water

Why does the Oceanic Conveyor Belt rise to the surface again in the Indian and Pacific Oceans?

• The cold bottom current is mixed with warm water at the equator

• The cold bottom current is mixed with less saline water

• All of the above