class iv activity on evaporation and condensation (29.10.2018)

Students of iv  A  investigated the evaporation and condensation process. 
They  took two similar sized cups and added 100ml water in them . Glass A was covered with a plastic wrap and B was kept  uncovered . Students placed the cups under same environmental conditions in warm place . After two hours they observed the condensed drops of water on inner side of plastic wrap  showing condensation . Container B had less water as water had  evaporated  from uncovered container .
Students predicted  what will happen after the activity . The investigation proved their predictions correct . It was a fair test .
Students learned to use correct vocabulary to explain condensation and evaporation . 
Students learnt they can use evaporation  to separate water from impurities . They can use condensation to collect pure water .

Making clean and pure water .