Page 2 - Jan-Mar 2016
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DiD you know?
      NATURE'S ARTISTRY                                                             The science of exploration of

                                                                                    caves and all aspects related
      A cave is an underground space that is naturally formed on the earth’s          to it is called Speleology.
      crust and can be entered from the surface. Caves are also called caverns or   Ariba Nigar Khan, VIII G, Greenwood Sr. Sec.
      rock shelters.                                                                School, Rampur; Umer Alam, VII C, Jaswant
                                                                                       Modern Sr. Sec. School, Dehradun

      TYPES OF CAVES                                            VOLCANIC CAVE
                                                                These mostly occur in the event of a volcanic eruption.
      The formation of  caves can be because  of a variety of   as the lava flows down,  its surface cools and solidifies.
      reasons such as chemical processes, erosion due to        however the liquid lava continues to flow underneath,
      water, tectonic forces, microorganisms and atmospheric    and  when  most  of  it  flows  out,  a  hollow  tube  remains,
      influence.
                                                                which is a unique type of cave formation.
      LIMESTONE CAVE                                            SEA CAVE

      This type of cave is      Sink Hole  Cave  Limestone      when  sea waves  attack  the
      the most common                                           coastline along a  line of
      in    rocks    which                                      weakness  on a cliff,  it forms
      are    soluble;  e.g.                                     a notch. The notch is eroded to
      limestone.     Other                                      form a cave. The cave with time
      soluble   rocks  are                                      and erosion becomes an arch,
      dolomite,     marble                                      and then a stack and stump.
      and  gypsum.  The                                         CORRASIONAL CAVE
      formula for solution            Illustration by: Akshaya E, VIII B ,
      of limestone in the       Angappa CBSE Sr Sec School, Coimbatore  This cave is formed due to
      presence of air and water is as follows:                  erosion that is caused by
                                                                streams carrying rocks and
      Ca CO  + h O+CO2= Ca (hCO )
            3   2                3 2                            other sediments.  These caves
      limestone caves like  borra caves also have stalactites,   are found behind waterfalls
      stalagmites and bizarre formations making these the       due to the erosion of rocks.
      most interesting caves in the world.
                                                                GLACIER CAVE
      MEGhALAyA - LAND Of CAVES                                 glacier cave is formed by melting ice and flowing water.
                                                                glacier caves are also called  ‘ice caves’. For example,
      Meghalaya besides                                         amarnath Cave in Jammu and Kashmir.
      being called the                                          M. Dhanush, X A, Bharatiya Vidya Bhawan Public School, Jubilee Hills,
      ‘abode   of  Clouds’                                      Hyderabad
      is also called the
      ‘land  of Caves’.  it                                                   Deccan Trap
      has a  large number
      of   limestone  caves                                           There are nearly 1200 caves of cave
      in the  Jaintia,  Khasi                                    architecture in Maharashtra. These caves were
      and garo hills. Of the        Illustration by: Pramuth Varma, VIII,   formed due to the volcanic basalt formation of
      ten longest caves                 DAV Public School, Sec 3, Vizag   Maharashtra, known as the ‘Deccan Trap’.
      in india, the first nine are in Meghalaya, while the tenth
      is in Mizoram. Caves are called krem in Khasi language.   ACTIVITy - LOST AND fOUND
      The longest is Krem liat Prah in the Jaintia hills, which   suppose you were lost in the caves
      is around 31 kms. it has a huge trunk passage called the   for a day. Describe your experience
      aircraft hangar !!                                        using the following words:
      Mahek Jain, VIII B, Angappa Educational Trust Senior Secondary School,   CAVE  SOUNDS  STREAM
      Coimbatore                                                                           ROPE
                                                                    TORCH         BATS



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