Unit 6 Test Retake

What is the primary driver of thermohaline circulation in the oceans?

• Wind patterns

• Temperature and salinity differences

• Tidal forces

• Ocean basin shape

Which of the following is a consequence of increasing atmospheric CO2 levels on the ocean?

• Decreased water temperature

• Formation of carbonic acid

• Increased pH of seawater

• Enhanced shell formation in marine organisms

In the global conveyor belt system, how long does it take for water to complete a full circuit?

• 100 years

• 500 years

• 1000 years

• 2000 years

Which factor does NOT influence surface ocean currents?

• Wind

• Coriolis effect

• Ocean basin shape

• Hydrothermal vents

What percentage of excess heat from global warming does the ocean absorb?

• 50%

• 70%

• 80%

• 90%

In which direction are ocean currents deflected in the Northern Hemisphere due to the Coriolis effect?

• Left

• Right

• Up

• Down

Which ocean zone is characterized by abundant sunlight and the most marine life?

• Mesopelagic zone

• Bathypelagic zone

• Epipelagic zone

• Abyssopelagic zone

What is a potential negative impact of ocean acidification on marine organisms?

• Increased photosynthesis

• Enhanced shell formation

• Difficulty in building and maintaining shells and skeletons

• Improved adaptation to warmer waters

Which of the following is an example of a negative feedback loop in the ocean-climate system?

• Warming oceans releasing more CO2

• Increased CO2 stimulating phytoplankton growth and CO2 absorption

• Melting ice caps reducing albedo

• Ocean acidification reducing marine life

What is the primary cause of rising sea levels?

• Increased salinity

• Thermal expansion of water and melting ice

• Changes in ocean currents

• Increased atmospheric pressure