Current Questions

Important Geophysical Phenomena & Geographical Features:

El Nino

Consider the following statements regarding El-Nino:

  1. EI-Nino is merely an extension of the warm equatorial current which gets replaced temporarily by cold Peruvian Current or Humboldt Current.
  2. The process of upwelling along the coast of South America in eastern pacific takes place during an El-Nino.

Which of the above statements are correct?

El Nino

Which of the following are the effects of El Nino?

  1. The distortion of equatorial atmospheric circulation.
  2. Irregularities in the evaporation of sea water.
  3. Reduction in the amount of planktons which further reduce the number of fish in the sea.

Choose the correct answer by using the codes given below:

Indian Ocean Dipole

.With reference to ‘Indian Ocean Dipole (IOD)’ sometimes mentioned in the news while forecasting Indian monsoon, which of the following statements is/are correct?

  1. IOD phenomenon is characterized by a difference in sea surface temperature between tropical Western Indian Ocean and tropical Eastern Pacific Ocean.
  2. An IOD phenomenon can influence an El Nino’s impact on the monsoon.

Select the correct answer using the code given below:

El Nino

Consider the following statements with reference to the effects of El Nino:

  1. El Nino warms and dries tropical ecosystems, reduces their uptake of carbon as well as exacerbates forest fires.
  2. Also, generally warm El Niño events are characterized by more tropical storms and hurricanes in the eastern Pacific and a decrease in the Atlantic, Gulf of Mexico and the Caribbean Sea.

Which of the above statements is/are incorrect?

Earth’s Atmosphere

Consider the following statements about the atmosphere of Earth:

  1. Ionosphere influences radio propagation to distant places on the Earth.
  2. Ionosphere coincides with the thermosphere.
  3. Heat transfer by convection is limited only to stratosphere.

Choose the correct answer from the code given below:

Polar Vortex

Due to extreme weather conditions in US, Polar Vortex is in news. Consider the following statements vis-à-vis Polar Vortex:

  1. It is a whirling cone of low pressure that is strongest in winter months.
  2. When the Polar Vortex is strongest, cold air is more likely to plunge into the US & Eurasia.
  3. The Polar Vortex generally spins in the lower troposphere.

Choose the correct answer from the code given below:

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