Page 37 - science
P. 37

What can materials do?



              In this lesson you will learn that some materials
              are waterproof.                                                             Key word

                                                                                          waterproof

            If a material keeps water out, it is waterproof.

















                                                                                          What do you
                                                               This child is              have at home

                                                               dry in their               that is
                                                               raincoat.                  waterproof?







                  Which material will keep a person

                  dry in the rain?

               Work with your group. Imagine you are going to                                     Be a

               make an umbrella.                                                                  scientist

               You will need to test some materials.                                      Scientists make

               1  Choose four different materials, such as                                guesses based

                  paper, tin foil, plastic wrap and cloth.                                on information

               2  Use each material to wrap a ball of                                     they have

                  cotton wool.                                                            collected.
                                                                                          This is called a
               3  Guess which material you think will keep                                prediction.

                  the cotton wool dry. This will be the best
                  material to make an umbrella.                                               page 7


                 Which material do you think will not make a
                  good umbrella?

      38
                                                                           ■ For more activities, go to Workbook 1 page 38.
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