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Page 18 - Ai Robogenius
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    3.  Mark the simple machine used to lift a bucket from a well.                                                         COMPETENCY-BASED QUESTIONS

                                    (i)  Lever                                 (ii)  Pulley                                                     1.  Ankita needs to lift a heavy box to put it on a high shelf. Which simple machine

                                    (iii)  Inclined plane                      (iv)  Wheel                                                          should she use to make the task easier?

                         4.  Identify the machine that lift heavy materials with less effort.                                                   2.  Riya wants to carry a large bag of sand from one end of the garden to the other.
                                                                                                                                                    She has a wheelbarrow. What simple machines are working in the wheelbarrow?
                                    (i)  Lever                                 (ii)  Pulley

                                    (iii)  Inclined plane                      (iv)  Wheelbarrow

                         5.  Which simple machine is used to split wood with an axe?

                                    (i)  Lever                                 (ii)  Wedge

                                    (iii)  Pulley                              (iv)  Wheel

                      B.  Write ‘T’ for true and ‘F’ for false.

                         1.  A bicycle is an example of a simple machine.

                         2.  The wheel and axle help things move or lift easily.

                         3.  An inclined plane makes it harder to push objects uphill.

                         4.  Scissors have two levers joined at a fulcrum.

                         5.  Pulley is a long bar that you push down on one side to lift

                             something on the other side.

                      C. Fill in the blanks using the given hints:

                         1.                  is a big machine that uses pulleys to lift heavy

                             things up.                                                                       Hints

                         2.  A                 machine is a tool that helps you do work more                  Simple
                                                                                                             Escalator
                             easily.
                                                                                                              Crane
                         3.  A                  machine is made up of two or more simple                      Motors
                             machines that work together to make a task easier.                              Electricity

                         4.  An                  is a complex machine that uses pulleys and                  Complex

                             inclined  planes to  move people  up and down safely and
                             easily.

                         5.  Simple machines don’t need                         or                 to work.

                                     AI RoboGenius - II
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