C24 SW3 Review

Front

What does it mean if a body of water becomes a 'dead zone'?

Back

A dead zone is an area in a body of water where the oxygen concentration is so low that it is unsuitable for marine life.

Front

What is the global oceanic conveyor belt?

Back

The global oceanic conveyor belt is a system of ocean currents that circulate water throughout the world's oceans, driven by differences in temperature and salinity.

Front

How does El Nino affect fishermen off the coast of South America?

Back

Fishermen typically dislike El Nino because it disrupts fish populations and leads to decreased catches.

Front

What factors keep ocean water moving?

Back

Ocean water movement is primarily driven by changes in density and concentration, which can be influenced by temperature and salinity.

Front

What weather patterns does Peru experience during an El Nino year?

Back

During an El Nino year, Peru experiences torrential rain, floods, and storms.

Front

Define 'ocean acidification'.

Back

Ocean acidification refers to the decrease in pH levels of the ocean due to the absorption of excess carbon dioxide from the atmosphere.

Front

What is the role of phytoplankton in marine ecosystems?

Back

Phytoplankton are microscopic plants that form the base of the marine food web and produce oxygen through photosynthesis.

Front

Explain the term 'thermohaline circulation'.

Back

Thermohaline circulation is the global movement of ocean water driven by differences in temperature (thermo) and salinity (haline), affecting climate and weather patterns.

Front

What is the significance of upwelling in ocean ecosystems?

Back

Upwelling brings nutrient-rich waters from the deep ocean to the surface, supporting high productivity and diverse marine life.

Front

What are the effects of climate change on ocean currents?

Back

Climate change can alter ocean currents by changing temperature and salinity patterns, which can impact weather systems and marine ecosystems.