Climate Effects of El Nino and La Nina

The video tutorial explains the causes of surface ocean currents, primarily driven by planetary winds. It distinguishes between cold and warm ocean currents and describes normal ocean conditions, including the process of upwelling, which brings nutrient-rich water to the surface, supporting local fisheries and economies. The video also covers the El Nino and La Nina phenomena, detailing their impact on global weather patterns, such as changes in precipitation and temperature across various regions, including South America, North America, Australia, and Africa.

What primarily drives surface ocean currents?

• Earth's rotation

• Tidal forces

• Planetary winds

• Solar radiation

What type of ocean current is the Peru current under normal conditions?

• Warm

• Cold

• Neutral

• Variable

What is the process called when deep ocean water rises to the surface, bringing nutrients?

• Upwelling

• Convection

• Downwelling

• Thermocline

During an El Nino event, which region experiences a wetter climate?

• Northwestern South America

• Southeastern Africa

• Central Asia

• Northern Europe

What is another name for the El Nino phenomenon?

• Gulf Stream

• Monsoon

• La Nina

• ENSO

How does La Nina affect the climate in the southern United States during winter?

• Wet and cold

• Warm and wet

• Cold and dry

• Warm and dry

Which region experiences a cooler climate during La Nina?

• Southeastern Africa

• Northern Europe

• Central Asia

• Western Australia

What is the primary difference between El Nino and La Nina?

• El Nino is a cooling event, La Nina is a warming event

• El Nino affects only the Pacific Ocean, La Nina affects only the Atlantic Ocean

• El Nino occurs in summer, La Nina occurs in winter

• El Nino involves warm waters moving east, La Nina involves warm waters moving further west

Which of the following regions becomes warmer and drier during an El Nino event?

• Northwestern South America

• Eastern Canada

• Southeastern Africa

• Southern Europe

What is the impact of El Nino on the climate of Australia?

• Warmer and drier

• No significant change

• Cooler and wetter

• Colder and drier