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7th Grade El Nino Quizzes, Questions & Answers

7th Grade

Top Trending El Nino Quizzes

ONI Index Quiz: Sea Surface Temps and ENSO Thresholds

This assessment focuses on the ONI Index, sea surface temperatures, and ENSO thresholds, evaluating your understanding of these critical climate indicators. By engaging with this content, learners can enhance their knowledge of...

Questions: 15 | Attempts: 10 | Last updated: Mar 23, 2026

Sample Question 1
What is the Oceanic Nino Index, and what does it measure?

A measure of total rainfall across the tropical Pacific over a three-month period

A measure of wind speed changes along the equatorial Pacific over a six-month period

The three-month running average of sea surface temperature anomalies in the Nino 3.4 region of the central tropical Pacific, used to define El Nino and La Nina events

A satellite-based index measuring the depth of the thermocline across the equatorial Pacific

Sample Question 2
El Nino conditions are officially declared when the ONI reaches or exceeds positive 0.5 degrees Celsius for at least five consecutive overlapping three-month periods.

True

False

Sample Question 3
What is a sea surface temperature anomaly, and why is it used rather than the absolute sea surface temperature to define El Nino?

The deviation of the current sea surface temperature from the long-term historical average for that location and time of year, which isolates the El Nino signal from normal seasonal variation

The absolute temperature of the ocean surface measured by satellites

The difference between the warmest and coldest parts of the ocean measured at the surface

The rate of change in sea surface temperature per day during warming events

7th Grade El Nino Quizzes, Questions & Answers

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