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SAI INTERNATIONAL  SCHOOL
                             Std VII      GEOGRAPHY        LESSON 5- WATER
                                                       MINDMAP – 4













                                                      OCEAN WATER











                                                          TIDES

                                            are the rise and fall of sea levels caused
                                                by the combined effects of the
                                           gravitational forces exerted by the Moon














                                                                                 NEAP TIDE

                                 SPRING TIDE                            refers to a period of moderate tides

                      When the sun and the moon are in line             when the sun and moon are at right
                      with each other, they pull the ocean's                  angles to each other.
                      surface in the same direction
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