Page 58 - SST Class 03
P. 58

aeroplane                                           helicopter


               Fuel and Pollution

            Most vehicles need petrol or diesel as fuel, which causes air pollution. Their

            consumption is increasing with every passing day because the number of
            vehicles is increasing. At present, effort is being made to use electricity to

            run many vehicles. We have to find a solution to the problem of air
            pollution.



                                     Facts


            • Different types of vehicles are called means of transport.
            • Different vehicles need different types of energy.
            • Vehicles can be grouped as per their speeds.

            • Normally, vehicles are grouped into means of land, water and air transport.

            • The means of land transport need roads or railways to move.
            • Aeroplane and helicopter are the most expensive.




                                                                 XERCISE


            A. Tick (3) the right option :
                 1. Vehicles help us transport people and ____________                .
                      (a) goods                        (b) passengers                      (c) workers

                 2. A tonga runs on ____________           .

                      (a) petrol                       (b) animal energy                   (c) electricity
                 3. The means of ____________           transport are the quickest.

                      (a) land                         (b) water                           (c) air
                 4. Petrol and diesel cause ____________           .

                      (a) pollution                    (b) ventilation                     (c) cleanliness


                            58   Contemporary Social Science-3
   53   54   55   56   57   58   59   60   61   62   63