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Sci-Five | The Hindu Science Quiz: On rain
Thunder clouds can sport enormous electric potential. File image for representation.
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1 / 5 |
Which of the following names is used to refer to thunderclouds?
- Cumulus
- Nimbostratus
- Cumulonimbus
- Cirrus
Cumulonimbus clouds are the menacing, towering clouds that produce hail, thunder and lightning.
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2 / 5 |
Thunder clouds can sport enormous electric potential. The Ooty Muon sensing experiment GRAPES-3 measured what was the highest value of the potential of a thundercloud. What was the value they measured?
- 1.3 volts
- 1.3 kilovolt
- 1.3 megavolt
- 1.3 gigavolt
at 1.3 gigavolt, that was a massive thundercloud that GRAPES-3 spotted. It had ten times higher potential than had been measured earlier in a cloud.
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3 / 5 |
Where can you see the Madden-Julian oscillation?
- Indian Ocean
- North Atlantic Ocean off Portugal
- Norwegian Sea
- North Pacific Ocean off Canada
Indian Ocean. The MJO is an eastward moving pulse of rainfall and clouds that is born in the Indian Ocean and moves eastward along the tropics to decay at the date line, but continue as a dry wave around the world. It typically recurs every 30-60 days.
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4 / 5 |
Which of the following climate patterns is associated with unusual warming of surface waters of the tropical southern Pacific ocean?
- El-Nino
- La Nina
- Hadley wave
- None of the above
The El-Nino is responsible for the warming of surface waters of South Pacific ocean near the tropics. It is part of a larger phenomenon called El-Nino Southern Oscillation.
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5 / 5 |
Why is the Madden-Julian Oscillation called an oscillation?
- Its temperature rises and falls
- It is a wave form
- It recurs somewhat periodically
- It moves like a swing
It recurs with an approximate period of 30-60 days.
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