Page 130 - SST Class 07
P. 130

A.   Tick (3) the right option :
                 1.   The ocean water is ______________  .

                      (a) saline                       (b) fresh                       (c) none of these
                 2.  The deepest point in the Indian Ocean is the ______________   Trench.
                      (a) Mariana                      (b) Java                        (c) none of these
                 3.  The rise of a wave is called a ______________  and its fall is called a ______________ .
                      (a) crest/trough                 (b) trough/crest                (c) current/crest
                 4.  A tsunami may be caused due to a ______________    _.

                      (a) cyclone                      (b) landslide                   (c) high wave
                 5.  A ______________     tide occurs when the earth, the moon and the sun make a right angle.
                      (a) spring                       (b) neap                        (c) ebb
                 6.  The Hindi name for Full Moon is ______________   .
                      (a) Amavasya                     (b) Purnima                     (c) none of these
                 7.  A warm current flows towards the ______________    .
                      (a) Equator                      (b) poles                       (c) none of these
                 8.   The ______________    is a warm current which makes the European coastal areas warm.

                      (a) Kurile Current               (b) Gulf Stream                 (c) none of these
            B.   Match the following :

                 1.   Spring tide   u              u   Having the quality of being mixed with salts.
                 2.   Trough        u              u   A part of the sea with a large curve of the shore.
                 3.   Crest         u              u   A large area partly surrounded by land.
                 4.   Gulf          u              u   The highest tide occuring due to the earth, the sun and the moon
                                                       being in one line.
                 5.   Bay           u              u   The low area lying between two hills or waves.
                 6.   Saline        u              u   The top part of a hill or wave.

            C.   Write ‘T’ for true and ‘F’ for false statements :
                 1.  The Caspian Sea is a sea.
                 2.  Salinity is higher in the Dead Sea than in the Baltic Sea.
                 3.  The Arabian Sea is located near India.
                 4.  The ocean waters remain static all the time.

                 5.  A tsunami can travel faster than a train.
                 6.  A neap tide is the lowest tide.
            D.   Name any two :
                 1.  water bodies with saline water :                       (a)  ______________     (b) ______________
                 2.  oceans :                                               (a)  ______________     (b) ______________
                 3.  seas in the Atlantic Ocean :                           (a)  ______________     (b) ______________
                 4.  movements of ocean water :                             (a)  ______________     (b) ______________

                     Contemporary Social Science-7
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