Coriolis Effect and Ocean Dynamics

The video explains Ekman transport, a phenomenon where wind causes water to move at an angle due to the Coriolis effect. This effect, caused by Earth's rotation, deflects moving objects to the right in the northern hemisphere and to the left in the southern hemisphere. The Ekman spiral describes how surface water layers drag deeper layers, diminishing in strength, resulting in a net water movement crucial for marine life. This process, known as upwelling, brings nutrient-rich water to coastal areas, supporting ecosystems.

What did Anson notice about his ship's movement in 1893?

• It drifted 20 to 40 degrees to the left of the wind direction.

• It moved in the same direction as the wind.

• It remained stationary despite the wind.

• It drifted 20 to 40 degrees to the right of the wind direction.

Why does Mexico travel faster than Alaska?

• Because it is a larger landmass.

• Because it is at a higher altitude.

• Because it is closer to the equator.

• Because it is closer to the poles.

What happens to a cloud formed at the equator as it drifts north?

• It moves faster than everything underneath it.

• It remains stationary.

• It moves slower than everything underneath it.

• It moves at the same speed as everything underneath it.

In which direction are moving objects deflected in the northern hemisphere due to the Coriolis effect?

• Downwards

• To the left

• To the right

• Upwards

What is the angle of deflection for the surface layer of water in the northern hemisphere due to the Coriolis effect?

• 90 degrees

• 45 degrees

• 30 degrees

• 60 degrees

What is the term for the spiral movement of water layers due to the Coriolis effect?

• Wind Spiral

• Ocean Spiral

• Coriolis Spiral

• Ekman Spiral

At what depth does the Ekman spiral typically end?

• 50 to 100 meters

• 100 to 150 meters

• 200 to 250 meters

• 150 to 200 meters

What is the net water transport direction in the northern hemisphere due to Ekman transport?

• 45 degrees to the right

• 45 degrees to the left

• 90 degrees to the right

• 90 degrees to the left

How does Ekman transport benefit marine life in coastal areas?

• By decreasing water pressure

• By warming the water

• By providing nutrient-rich water through upwelling

• By increasing water salinity

What process allows deeper, cooler water to reach coastal areas?

• Sidewelling

• Upwelling

• Downwelling

• Crosswelling