Page 1 - ADVANTAGES AND DISADVANTAGES OF VOLCANO
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SAI INTERNATIONAL SCHOOL


                                                        CLASS-3

                             LN – Advantages and disadvantages of volcanic eruption

               Learning Objective – Students can understand the positive and negative effects of
               volcano. They can understand and explain how hot springs are formed. They can
               understand and explain how volcanoes make the soil fertile.


               How do volcanoes affect people?


               You probably think that volcanoes only cause death and destruction! But millions
               of people live in volcanic regions. They know the risks. Volcanoes have positive as
               well as negative effects.

               The positive effects of volcanic eruption –


                     Tourists come to watch volcanoes erupting. This provides employment for
                       many people in volcanic regions.

                     Underground water in volcanic regions is hot enough to heat people's
                       houses and make electricity.
                     Lava makes good soil. Ash fertilises the soil. Crops grow very well.
                     Underground water is heated by magma. This water comes to the surface
                       as hot as springs. These are tourist attractions.


                   Negative effects

                     People can be injured or killed by ash and hard lumps of lava.
                     Lava burns and buries crops and buildings.
                     Ash covers buildings and crops. People become ill when they breathe in ash
                       and poisonous gases.


               Learning Outcome - Students can understand the positive and negative effects of

               volcano. They can understand and explain how hot springs are formed. They can
               understand and explain how volcanoes make the soil fertile.

               Let’s do an activity:

               Research and list down the damages caused by the volcanoes of Mount Etna and
               Goma.
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