Page 154 - SK Year 5 Science DLP
P. 154

HEAT AND TEMPERATURE


           Ana and her friend are eating at a restaurant.

                                                     How does this hot
                  Ouch, it’s hot!                    drink become cold?












                                                                            This drink becomes
                  Wait for a while for                                      cold when heat
                  the drink to cool.                                        is lost to the
                                                                            surrounding.

           Heat is a form of energy that is transferred due to the
           difference in temperature. A material will become hotter
           when gaining heat. A material will become colder when
           losing heat.

                                                       How do we measure the
                                                       temperature of a material?               SEKOLAH KEBANGSAAN SINAR



           Temperature is the degree of hotness or coldness
           of a material. Temperature can be measured using                              boiling point
                                                                                         of water
           a thermometer. The standard unit for measuring                                100°C
           temperature is degree Celsius. The symbol for
           degree Celsius is °C. Let us look at the pictures                              normal body
           of thermometers.                                                               temperature
                                                                                          37°C
                                                tube                                      freezing point
                                        temperature                                       of water 0°C
                                        scale
              SCIENCE INFO

         Besides degree Celcius, we can
         also use degree Fahrenheit (°F)       liquid             mercury                alcohol
         on the thermometer to measure                             liquid                 liquid
         temperature.


         146                                 room thermometer         laboratory thermometer
         146
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