El Niño Notes Quiz

What is the primary characteristic of El Niño?

• Unusually cold ocean temperatures
• Unusually warm ocean temperatures
• Increased hurricane activity
• Decreased rainfall globally

How often does El Niño typically occur?

• Every year
• Every 2-7 years
• Every 10-15 years
• Once in a century

What happens to the trade winds during an El Niño event?

• They strengthen
• They weaken or reverse
• They remain unchanged
• They shift northward

How does El Niño affect cold water upwelling along the South American coast?

• It increases cold water upwelling
• It decreases cold water upwelling
• It has no effect on upwelling
• It causes upwelling to shift eastward

Which region of the United States typically experiences cooler, wetter conditions during an El Niño winter?

• Northern U.S.
• Southern U.S.
• Eastern U.S.
• Western U.S.

How does El Niño affect the Atlantic hurricane season?

• It intensifies hurricane activity
• It leads to a milder hurricane season
• It has no effect on hurricanes
• It causes hurricanes to form earlier

Which region of North America typically experiences increased rainfall during El Niño?

• Ohio Valley
• Pacific Northwest
• Southern California
• New England

What type of extreme weather event may become more frequent in California during El Niño?

• Tornadoes
• Hurricanes
• Extreme Rainstorms

• Heat waves

How does El Niño typically affect winter temperatures in northern U.S. and Canada?

• Colder winters
• Warmer winters
• No significant change
• More variable temperatures

Which economic sector is likely to be negatively impacted by warmer winters during El Niño?

• Agriculture
• Energy production
• Winter tourism
• Manufacturing