Due 10/31 8.10A Ocean Currents

What was the primary scientific benefit derived from the 1992 incident where 28,000 bath toys were swept into the North Pacific?

• It highlighted the dangers of ocean pollution.

• It provided data for charting ocean currents.

• It led to new regulations for cargo ship safety.

• It demonstrated the resilience of plastic in marine environments.

Ocean currents are broadly categorized into two main types. What are these two types?

• Warm and cold currents

• Coastal and open-ocean currents

• Surface and deep ocean currents

• Wind-driven and density-driven currents

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The Earth's rotation causes a deflection of moving air and water, leading to the formation of large ocean current loops. What is this phenomenon called?

• Thermohaline circulation

• The Coriolis Effect

• Ocean upwelling

• Tidal forces

What is the 'global conveyor belt' in the ocean, and what drives its movement?

• A fast-moving surface current driven by wind.

• A deep-ocean current driven solely by changes in water density.

• A winding loop formed by the combination of deep water thermohaline circulation and wind-driven surface currents.

• A localized current system found only in the Pacific Ocean.

Which statement best explains how ocean currents move and why they are important to Earth’s climate?

• Ocean currents are caused by earthquakes and move randomly across the oceans.

• Ocean currents are driven by wind, temperature, and salinity differences, and they distribute heat around the planet.

• Ocean currents only occur near the equator and have little effect on climate.

• Ocean currents move because of tides and only affect areas near the coast.

What is one possible effect if the global ocean conveyor belt (thermohaline circulation) slows down?

• Some regions could get colder.

• The oceans would stop moving completely.

• The equator would become cooler than the poles.

• Weather everywhere would stay the same.

What is the main driver the of the deep-water, global ocean conveyor belt system.

• Wind and storms

• Differences in water temperature and salinity

• Earth’s rotation on its axis causing day and night

• Waves created by tides