A3 Science Theme Week January 2009
We were issued a challenge from two pirates, Captain Jim and Scar Face. We had a problem on board our ship as our drinking water kept disappearing. The pirates insisted no one had drunk any without permission nor had any one tipped some away. They needed our keen scientific brains to work out what was happening and how we could prevent it from occurring. We decided to see what would happen if water and other different liquids, were left in the classroom over a few days. We found out that indeed all the liquids disappeared and we learnt that all liquids do evaporate. We learnt about molecules and the theories of the three states of matter from a science workshop and a dvd from BBC Science Clips. We then learnt how the evaporation rate can be increased if more heat is added and if there is moving air above the liquid. We decided that these facts could help us reduce evaporation. We thought about other factors that could effect evaporation; shape of the container, adding a lid (did the type of material make a difference to the evaporation rate?), the number of holes in a lid and putting it near a source of heat. |