El Niño and La Niña

What are El Niño and La Niña?

La Niña is characterized by ______________ of the Western Pacific Ocean.

• a cooling

• a warming

• average temperatures

El Niño ___________________ the trade winds causing the warm pool to move ___________.

• weakens or reverses; west

• weakens or reverses; east

• intensifies; east

• intensifies; west

(a)   causes more rainfall in the Northwest United States and poor fishing off the coast of South America (Peru).

Why do the fisherman of Peru and South America not welcome a strong El Nino?

Which of the following is an INCORRECT statement about El Niño and La Niña?

• Both occur every 2-7 years

• El Nino is a warming and La Nina is a cooling of the Pacific Ocean

• Both occur in the Atlantic Ocean

• Neither are considered "storms"

In El Nino, rain moves east with the warm pool causing rainy/stormy weather in California and less hurricanes in the Atlantic Ocean.

• True

• False

When La Nina and hurricanes pull cold water to the surface and bring nutrient rich sediments from the seafloor, this is called (a)   .

Where does the term "El Niño" and "La Niña" come from? What does it mean?

What are some similarities between El Nino and La Nina?