Ocean Currents and Their Dynamics

In 1992, a cargo ship lost 28,000 rubber ducks in the North Pacific, which helped researchers study ocean currents. Ocean currents are driven by wind, tides, water density, and Earth's rotation, and are categorized into surface and deep ocean currents. Surface currents are influenced by wind, forming gyres due to the Coriolis Effect. Deep ocean currents are driven by density changes, forming the global conveyor belt. Climate change is slowing this conveyor belt, affecting weather systems.

What event in 1992 helped researchers better understand ocean currents?

• A major earthquake

• An oil spill

• A cargo ship losing bath toys

• A volcanic eruption

What are the two main categories of ocean currents?

• Surface and tidal currents

• Deep and shallow currents

• Surface and deep ocean currents

• Tidal and wind-driven currents

What is the primary force behind surface currents near the shore?

• Earth's rotation

• Water density

• Solar radiation

• Wind and tides

What primarily drives surface currents in the open ocean?

• Water density

• Wind

• Earth's rotation

• Tides

What is the Coriolis Effect responsible for in ocean currents?

• Causing earthquakes

• Increasing water density

• Forming gyres

• Creating tidal waves

What causes deep ocean currents to form?

• Earthquakes

• Changes in water density

• Wind patterns

• Tidal forces

What happens to water as it moves towards the North Pole?

• It becomes colder and saltier

• It evaporates

• It becomes less salty

• It becomes warmer

What is the Global Conveyor Belt?

• A series of surface currents

• A deep ocean current system

• A tidal wave pattern

• A wind-driven current

How long does it take for a drop of water to complete the Global Conveyor Belt?

• A year

• A decade

• A century

• A thousand years

What impact might rising sea temperatures have on the Global Conveyor Belt?

• Speed it up

• Slow it down

• Reverse its direction

• Stop it completely