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Consider the following statements about the "Roaring Forties".Which of these statements are correct?

  1. They blow uninterrupted in the Northern and Southern Hemisphere.
  2. The blow with great strength and constancy.
  3. Their direction is generally from North-West to East in the Southern Hemisphere.
  4. Overcast skies, rain and raw weather are generally associated with them.

    Aiv only

    Bi, ii

    Cii, iii, iv

    Dii, iii

    Answer:

    C. ii, iii, iv

    Read Explanation:

    The "Roaring Forties"

    • Roaring Forties are a region of strong westerly winds found in the Southern Hemisphere, roughly between the latitudes of 40 and 50 degrees south. 
    • The Roaring Forties are known for their strong and relatively constant westerly winds.
    • In the Southern Hemisphere, the Roaring Forties generally blow from west to east, which means they have a west-to-east direction.
    • The Roaring Forties are associated with stormy and often overcast weather.
    • They are known for bringing frequent low-pressure systems and rainfall to certain regions.
    • In ancient times the Roaring Forties were a major aid to ships sailing the Brouwer Route from Europe to the East Indies or Australasia.

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    പ്രഭാത നക്ഷത്രവും, പ്രദോഷ നക്ഷത്രവും ശുകനാണെന്നു കണ്ടെത്തിയത് ആര് ?

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    1. ഹിമാലയം 
    2. ജപ്പാന്റെ രൂപവൽക്കരണം
    3. ആന്റീസ് മലനിരകൾ
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      La Nina is suspected to have caused recent floods in Australia. How is La Nina different from El Nino? 

      1.La Nina is characterised by unusually cold ocean temperature in equatorial Indian Ocean whereas El Nino is characterised by unusually warm ocean temperature in the equatorial Pacific Ocean.

      2.El Nino has adverse effect on south-west monsoon of India, but La Nina has no effect on monsoon climate.

      Which of the statements given above is/are correct?

      ഒരു പ്രത്യേക ഇക്കോസിസ്റ്റത്തിലെ ജീവിവൈവിധ്യമാണ് ?
      ഊഷ്മാവിന്റേയും, മഴയുടേയും അടിസ്ഥാനത്തില്‍ കാലാവസ്ഥയെ തരംതിരിച്ച ശാസ്ത്രകാരന്‍