El Nino and La Nina MCQ Questions and Answers for Practice

1. El Nino may cause:

1. All of them
2. Mudslides
3. Floods
4. Drought

2. Episodes of ocean warming that affect the eastern tropical Pacific are called

1. La Nina
2. monsoons
3. El Nino

3. Periodic change towards unusual colder side is called:

1. upwelling
2. La Nina
3. El Nino
4. Both A and B

4. Some of the heaviest annual precipitation occurs

1. over most of Australia
2. within the Amazon Basin
3. in the Sahara

5. Strong El Nino events happen every five years.

1. True Statement
2. False Statement

6. Surface ocean temperatures of the eastern tropical Pacific are colder than average during an El Nino event.

1. True Statement
2. False Statement

7. The 1997-98 El Nino event was responsible for

1. all of the above
2. floods from Texas to the Gulf states
3. Landslides along the California coast
4. significant coastal erosion in California

8. The strongest La Nina on record occurred in 1997-1998.

1. True Statement
2. False Statement

9. The trade winds are weaker during an El Nino event.

1. True Statement
2. False Statement

10. The warm, humid trade winds converge and produce abundant rainfall in the tropics.

1. True Statement
2. False Statement

11. What causes warm than normal sea-surface temperature?

1. La Nina
2. El Nino
3. Coriolis Force

12. What happen to the cyclones during El Nino episode?

1. Neither A nor B
2. Wind speed is slow
3. Wind speed had greater tendency to trigger intense tropical cyclones
4. Both A and B

13. Which of the following is a possible condition during an El Nino event?

1. all of the above
2. drought in Australia
3. trade winds weaken
4. more rain during the dry season in Florida

14. Which of the following is not affected by the Phenomena of El Nino?

1. Tea Plantation
2. Paddy
3. Maize
4. Castor

15. Which of the follwoing is the colde event:

1. Norther Oscillation
2. El Nino
3. La Nina
4. Southern Oscillation