El Nino and La Nina Quiz

What are El Nino and La Nina?

• Complex weather patterns resulting from variations in ocean temperatures in the Equatorial Pacific Region.

• Simple weather patterns resulting from variations in ocean temperatures in the Atlantic Ocean.

• Weather patterns resulting from variations in air pressure in the Arctic Region.

• Simple weather patterns resulting from variations in ocean temperatures in the Indian Ocean.

What does the ENSO cycle describe?

• Fluctuations in temperature between the ocean and atmosphere in the east-central Equatorial Pacific.

• Fluctuations in temperature between the ocean and atmosphere in the Arctic.

• Fluctuations in temperature between the ocean and atmosphere in the Indian Ocean.

• Fluctuations in temperature between the ocean and atmosphere in the Atlantic Ocean.

How long do El Nino and La Nina episodes typically last?

• Nine to 12 months.

• One to three months.

• Two to five years.

• Six to eight months.

What is El Nino known for?

• Unusual warming of surface waters in the eastern tropical Pacific Ocean.

• Unusual cooling of surface waters in the eastern tropical Pacific Ocean.

• Unusual warming of surface waters in the Atlantic Ocean.

• Unusual cooling of surface waters in the Indian Ocean.

What is La Nina known for?

• Unusual cooling of the tropical eastern Pacific.

• Unusual warming of the tropical eastern Pacific.

• Unusual cooling of the Atlantic Ocean.

• Unusual warming of the Indian Ocean.

When do both El Nino and La Nina tend to peak?

• During the Northern Hemisphere winter.

• During the Northern Hemisphere summer.

• During the Southern Hemisphere winter.

• During the Southern Hemisphere summer.

Who first recognized El Nino?

• Peruvian fishermen.

• Spanish sailors.

• Indian traders.

• Chinese explorers.

What does "El Nino" mean in Spanish?

• The little boy.

• The big wave.

• The warm sea.

• The cold wind.

How often do El Nino events occur?

• Irregularly at two- to seven-year intervals.

• Regularly every year.

• Every ten years.

• Every five years.

What happens to atmospheric pressure when coastal waters become warmer in the eastern tropical Pacific during El Nino?

• It increases

• It decreases

• It remains the same

• It fluctuates randomly