Page 37 - Finalll Science BB Prep2 t1 2025_Neat
P. 37

Convection Current
























                     Water particles                   Hot water                        Cold water on
                     at bottom gain                   rises up due                   surface sinks due to

                     thermal energy                                                   its high density &
                      & move away                       to its low                     replaces the hot

                           faster                        density                             water


                                                                                 Freezer at top of
                 Space heater on the floor
                                                                                    refrigerator
                Heat transfers from it to the                               Denser cold air sinks to
                  around so, warm lighter air                                bottom allowing lighter

                   (low density) rises and
                                                                          warm air to rise to the top.
                   colder denser air sink.


















                First Term                                         64
   32   33   34   35   36   37   38   39   40