La Niña and Its Effects

The video discusses La Niña, a climate pattern affecting global weather, particularly in the US. It explains how stronger trade winds in the Pacific Ocean lead to cooler waters in the east and warmer waters in the west, impacting atmospheric circulation and weather patterns. The video also highlights La Niña's global effects, such as increased hurricanes in the Atlantic and flooding in Australia. It contrasts La Niña with El Niño, its opposite, and mentions historical observations by South American fishermen. Modern researchers use the Ocean Niño Index to predict these phenomena.

What is the probability that La Niña will continue through the winter months?

• 50%

• 85%

• 70%

• 95%

What happens to the trade winds during a La Niña event?

• They reverse direction completely.

• They weaken and blow from west to east.

• They remain unchanged.

• They strengthen and blow from east to west.

How does La Niña affect the ocean temperatures in the Pacific?

• Ocean temperatures remain stable.

• The entire Pacific Ocean warms up.

• Cool waters rise to the surface in the east central Pacific.

• Warm waters move to the east Pacific.

Which of the following is a global impact of La Niña?

• Increased snowfall in Europe

• Decreased hurricane activity in the Atlantic

• Flooding in Australia

• Droughts in the U.S.

What is the relationship between La Niña and El Niño?

• They are the same phenomenon.

• El Niño occurs only in the Southern Hemisphere.

• They are opposite phenomena.

• El Niño is a stronger version of La Niña.

How did fishermen historically identify the occurrence of El Niño?

• By observing changes in fish populations

• By noticing changes in ocean temperatures

• By tracking bird migration patterns

• By measuring rainfall levels

What tool do researchers use today to predict La Niña and El Niño events?

• The Global Weather Predictor

• The Atlantic Storm Tracker

• The Pacific Temperature Gauge

• The Ocean Niño Index