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D.  Match the following.

                            Column A                                         Column B

                        1.  Matter                                      (a)  Water falling in the form of rain

                        2.  Molecules                                   (b)  Taking care of teeth and gums

                        3. Precipitation                                (c) Generates electricity

                        4.  Solar roof panels                           (d)  Non-renewable source of energy

                        5.  Oral hygiene                                (e)  Anything that has mass and
                                                                             occupies space

                        6.  Coal                                        (f)  Tiny particles that make up objects


                    E.  Answer the following questions.

                        1.  Write down the properties of liquids and gases.

                        2.  What is a solution? What are the components of a solution?

                        3.  What is water cycle? Explain with the help of a diagram.

                        4.  What are renewable sources of energy? Discuss any three such sources.

                        5.  What are the causes of unhealthy surroundings? Mention any two ways to

                            improve your surroundings.

                        6.  Why is the sun important for life on earth?




































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