Understanding ENSO Phenomena

The video explains the ENSO phenomenon, focusing on its three phases: neutral, El Nino, and La Nina. ENSO involves the oscillation of ocean temperatures in the Pacific Ocean, influenced by trade winds. The neutral phase features a balance of warm and cold currents, while El Nino weakens trade winds, causing warm currents to shift eastward, leading to droughts in Australia and floods in South America. La Nina strengthens trade winds, pushing warm currents westward and bringing rain to the western Pacific.

What does the term 'ENSO' stand for?

• Equatorial Northern Southern Oscillation

• Eastern Northern Southern Oscillation

• El Nino and Seasonal Oscillation

• El Nino and Southern Oscillation

Which ocean is primarily involved in the ENSO phenomenon?

• Atlantic Ocean

• Indian Ocean

• Pacific Ocean

• Arctic Ocean

In the Neutral Phase, what role do trade winds play?

• They reverse the direction of ocean currents.

• They push warm ocean currents towards the eastern Pacific.

• They push warm ocean currents towards the western Pacific.

• They cause the ocean currents to remain stationary.

What is the Walker circulation?

• A pattern of air moving south to north

• A pattern of rising air in the West and falling in the East

• A pattern of rising air in the East and falling in the West

• A pattern of air moving north to south

During the El Nino phase, what happens to the trade winds?

• They remain unchanged.

• They weaken.

• They reverse direction.

• They become stronger.

What is a significant effect of El Nino on the Peruvian coast?

• Increased cold temperatures

• Heavy rainfall and floods

• Stable weather patterns

• Drought conditions

In the La Nina phase, what happens to the ocean surface temperature?

• It fluctuates randomly.

• It remains constant.

• It becomes cooler.

• It becomes warmer.

What is the term used for the rising path of water temperature during La Nina?

• Isotherm

• Thermohaline

• Thermocline

• Thermocouple

Which phase is associated with strong trade winds?

• El Nino

• None of the above

• La Nina

• Neutral Phase

How do El Nino and La Nina phases differ in their impact on the western Pacific?

• Both cause heavy rain

• El Nino causes heavy rain, La Nina causes drought

• El Nino causes drought, La Nina causes heavy rain

• Both cause drought