Understanding ENSO and Its Impact

The video explains the El Nino Southern Oscillation (ENSO), a major climate driver affecting global weather patterns. ENSO consists of three phases: El Nino, La Nina, and neutral. Each phase impacts climate differently, influencing events like droughts, floods, and cyclones. Trade winds and Walker circulation play crucial roles in these phases. The video highlights ENSO's significant effects on Australia and marine life, emphasizing the importance of understanding ENSO for managing future climate risks.

What is the in-between phase of El Nino and La Nina called?

• Neutral

• Intermediate

• Median

• Middle

Which natural events are influenced by ENSO in Australia?

• Earthquakes

• Volcanic eruptions

• Tornadoes

• Bushfires and floods

What do trade winds do in the Pacific Ocean?

• Cool the ocean surface

• Drive warm surface waters

• Create hurricanes

• Stop ocean currents

How do scientists measure the phases of ENSO?

• With seismic sensors

• Through ocean robots and satellites

• Using telescopes

• By observing animal behavior

What happens during a La Nina event in northeastern Australia?

• Rainfall decreases

• Cyclones form

• Droughts increase

• Temperatures drop

How does La Nina affect the Lewin Current?

• Weakens it

• Strengthens it

• Stops it

• Reverses it

What occurs when trade winds weaken during El Nino?

• Warm water moves west

• Cold water surfaces

• Trade winds strengthen

• Warm water moves east

How does El Nino affect rainfall in South America?

• Increases it

• Causes drought

• No effect

• Decreases it

What was significant about the 1997-98 El Nino?

• It caused global devastation

• It only affected Australia

• It had no impact

• It was the weakest

Why is understanding ENSO important for the future?

• To control ocean currents

• To stop hurricanes

• To manage climate risks

• To predict earthquakes