ENSO AP Human Geography Quiz: Test Your Knowledge of Climate Patterns

📚 Quick Study Guide

• ☀️ Normal Conditions: Trade winds blow west across the Pacific, warm water piles up in the western Pacific, and cold water upwells along the coast of South America.
• 🌊 El Niño Conditions: Trade winds weaken or reverse, warm water spreads east towards South America, suppressing upwelling and causing warmer ocean temperatures.
• 🥶 La Niña Conditions: Trade winds strengthen, pushing more warm water to the western Pacific and causing cooler ocean temperatures in the eastern Pacific.
• 🌡️ ENSO Index: A measure of sea surface temperature anomalies in the central Pacific, used to determine the phase of ENSO (El Niño, La Niña, or neutral).
• ☔ Impacts: ENSO affects weather patterns globally, influencing rainfall, temperature, and storm tracks. El Niño often brings wetter conditions to the southern US and drier conditions to Australia, while La Niña has the opposite effect.
• 📅 Frequency: El Niño and La Niña events typically occur every 2-7 years and can last for several months to over a year.
• 📈 Monitoring: Scientists use satellites, buoys, and climate models to monitor ENSO conditions and make predictions about future events.

Practice Quiz

1. What is the primary driver of normal climate conditions in the Pacific Ocean?
   1. A. Jet Stream
   2. B. Trade Winds
   3. C. Coriolis Effect
   4. D. Ocean Currents
2. During an El Niño event, what happens to the sea surface temperatures in the eastern Pacific Ocean?
   1. A. They become colder than normal.
   2. B. They become warmer than normal.
   3. C. They remain the same.
   4. D. They fluctuate rapidly.
3. Which of the following is a typical impact of La Niña on the United States?
   1. A. Wetter conditions in the Southwest
   2. B. Drier conditions in the Pacific Northwest
   3. C. Warmer winters in the Southeast
   4. D. Cooler summers in the Northeast
4. What happens to upwelling along the coast of South America during an El Niño event?
   1. A. It increases significantly.
   2. B. It decreases or is suppressed.
   3. C. It remains constant.
   4. D. It reverses direction.
5. How frequently do El Niño and La Niña events typically occur?
   1. A. Every year
   2. B. Every 2-7 years
   3. C. Every 10-15 years
   4. D. Every 20-30 years
6. Which region typically experiences drier conditions during an El Niño event?
   1. A. Australia
   2. B. The Southern United States
   3. C. Southeast Asia
   4. D. South America
7. What tools do scientists use to monitor ENSO conditions?
   1. A. Barometers and thermometers only
   2. B. Satellites, buoys, and climate models
   3. C. Radiosondes and weather balloons only
   4. D. Telescopes and seismographs